Pi on the Fly in Berwick: 21 Days of Tagging, an Hour-Plus Drive, and 8 of the Most Creative Slices in NEPA

Some pizzerias find me through word of mouth. Some find me through the search bar. And every once in a while, one finds me by being so persistent and so charming that I literally have no choice but to get in the car and drive over an hour to see what all the noise is about.

That’s the Pi on the Fly story.

Pi on the Fly is a Berwick-based food trailer making some of the most creative, flavor-packed, attitude-forward slices I’ve come across in NEPA. The first ripples came through my followers — tagged photos, DMs, messages all pointing in the same direction. “Jim, you need to try this.” “Jim, have you seen Pi on the Fly yet?” “Jim, get to Berwick.” A familiar drumbeat for any pizza I end up chasing down.

And then the trailer itself started getting involved.

The 21 Days That Reeled Me In

This part deserves its own section, because it’s one of my favorite NEPA pizza stories of the year.

Pi on the Fly started tagging the NEPA Pizza Review Facebook page in a playful, fun post every single day. Not once. Not a couple times. Twenty-one days in a row. Different posts, different angles, different slices, but the same energy — a little wink, a little dare, a “come find us” attitude that was impossible to ignore. Around day ten, I was laughing. By day fifteen, I was plotting the drive. On day twenty-one, I was loading up the car and heading south, because there’s only so long a pizzaiolo can hold out when someone is throwing slices at his timeline that consistently and that creatively.

That kind of confidence in your product is rare, and it usually means one of two things: the operator has a real personality and likes the bit, or the pizza actually backs it up. With Pi on the Fly, the answer is both — and that’s exactly what made the trip worth it.

Atmosphere: A Mobile Pizza Trailer with Real Personality

Pi on the Fly is a true mobile operation — there’s no fixed brick-and-mortar address you can plug into your GPS and call it a day. They move. On this visit, they were set up at Dipped Ice Cream in Berwick, which is exactly the kind of setting where a creative pizza trailer thrives — community-style, walk-up, casual, with the smell of garlic and ricotta hitting you before you even see the slices.

If you’re planning a trip, your move is to follow Pi on the Fly on social to see where the trailer is parked that day. That’s part of the charm. It’s a chase, and it’s worth the chase.

I walked up to the window, looked at the lineup of slices on display, and immediately realized there was no way I was picking just one. So I did what any reasonable pizza reviewer would do: I asked the pizza guy to hand me eight of his most popular cuts and let him build the flight himself.

What landed on my tray was a masterclass in range — three styles (NY, Grandma, Sicilian), gourmet topping combinations that had no business being as cohesive as they were, and one slice that genuinely tastes like a fried jalapeño popper.

Before I get into the rankings, I want to talk about the thing that impressed me most: the crusts.

Pizzaiolo’s Notes 🍕

This is the section where I have to put on the pizzaiolo hat and tip it, because what’s happening with the crusts at Pi on the Fly is the real story:

• The NY crust is thin and seriously crispy. Even the heavily loaded slices — and there were several — held their structure when I lifted them. The Big Popper, which by all rights should have been a flop, barely bent. That’s a sign of a kitchen that respects the bake.
• The Grandma is thin for a Grandma. This is a stylistic choice that I love. Many Grandmas in the region lean thick, soft, and bready. Pi on the Fly’s Grandma is crispy, crunchy, and structurally locked in, even with generous toppings. Zero flop. The bottom crust had a real audible snap.
• The Sicilian (Bombolone) crust pulled off something genuinely difficult. It’s light and tender inside despite being stuffed full of ricotta, and the bottom hit a perfect deep golden brown with a satisfying crisp. Tender on top, crisp on the bottom, ricotta in the middle — that is not easy to dial in. It’s a technical pie executed at a high level.
• Deep golden brown across the board. Whatever oven setup is running in that trailer, it’s calibrated, and the operator is paying attention. There’s no underbake here, no pale-bottom slices being pushed out the window. Every crust came out the way a pizzaiolo wants it to come out.

That alone makes Pi on the Fly worth the drive. Toppings can be replicated. A consistent, well-engineered bake across three different pizza styles in a mobile trailer is much harder.

The 8 Slices, Ranked by How Much I enjoyed Each in the Moment

Here’s how I ranked the flight — first bite to last. All eight were genuinely good, so the ranking is more about the magic of each slice than any of them missing the mark.

1. Tipsy Grandma

A Grandma pizza with vodka sauce in place of the traditional red. This was the runaway winner of the flight. Vodka sauce belongs on a thin, crispy Grandma crust more than I realized — the creaminess pulls beautifully off that crunchy bottom, and the slight pink-orange tomato richness adds a depth that a standard Grandma just can’t match. First bite, I stopped. Second bite, I laughed. By the third bite I already knew this was going to be the slice I’d be thinking about on the drive home.

2. Sweet Sauce NY Slice

A NY slice flipped on its head — cheese on the bottom, sweet sauce on top. This isn’t a gimmick. The sweet sauce floats over the cheese in a way that completely changes the flavor profile of a New York slice, and the thin, crispy NY crust holds everything together. It plays like an upside-down Sicilian on a NY canvas, and it works. A clever, confident slice.

3. New York Cheese Slice (Plain)

The benchmark, and a strong one. A pizzeria that can put out a great cheese slice can put out almost anything. Thin, crispy, balanced sauce-to-cheese, with a foldable-but-structural feel. This is the slice I’d hand someone to prove the trailer is the real deal before I unleashed the gourmet stuff on them.

4. Big Popper

A NY-style crust topped with sour cream, bacon, yellow cheddar, and sliced jalapeños — and it tastes exactly like a fried jalapeño popper. Not “like a popper-inspired pie.” Not “in the neighborhood of a popper.” It hits the specific flavor you get when you bite into a deep-fried, cream-cheese-stuffed pepper at a bar. The sour cream is the secret weapon. This is one of those slices where I can already see the lines forming — it’s a hook.

5. Grandma

The classic Grandma, and a great one. The reason it’s not higher is purely because the Tipsy Grandma exists and is doing something extra special. As a standalone Grandma slice, this is one of the better executions I’ve had in the region for the reasons in the Pizzaiolo’s Notes section above — thin, crispy, structurally honest.

6. Tri-Pi Slice

A Grandma pizza with three sauces — pesto, vodka, and red pizza sauce — all on one slice. The name is a fun nod to Tri-Pi Pizza in Bloomsburg, which the operator behind Pi on the Fly used to own years ago. That’s a great touch of NEPA pizza history sitting right there in the topping bin. The three-sauce concept is bold and fun, and the slice eats well — though for me, the Tipsy Grandma (vodka alone) was just so dialed-in that splitting the canvas three ways slightly diluted the magic. Still, the storytelling alone earns this slice its place in the flight.

7. Loaded Pickle Slice

Sliced dill pickles, bacon, dill, and a white sauce (possibly ranch). I went in skeptical and came out a believer. Pickle pizza is a polarizing concept, and the only way it works is if the kitchen commits to it. Pi on the Fly commits — bright dill flavor, salty bacon, creamy white sauce balancing the acidity. It’s not for everyone, but for the people it’s for, it’s for them.

8. Bombolone

A massive, thick Sicilian slice stuffed with ricotta cheese the way a donut is filled with cream — then smothered with mozzarella, plenty of sauce, a heap of garlic, and Italian seasoning. The Bombolone landing at #8 says nothing bad about the Bombolone and everything about how stacked this flight was. The crust execution on this slice is a technical achievement (see Pizzaiolo’s Notes), and the ricotta-stuffing concept is a showstopper visually and conceptually. By the time I got to this one, I was running out of stomach real estate — this is a slice that needs to be ordered fresh and ordered first if you want to give it the attention it deserves. I’m coming back for this one solo.

What I’d Order Next Time

The Tipsy Grandma is automatic. The Bombolone is getting ordered fresh and first so I can give it the spotlight it earned. I’d love to bring the Pizza Prince along and watch him take down the Big Popper — that’s going to be a moment. And honestly, I want to try whatever new creation the trailer is running that week, because the Pi on the Fly menu feels like the kind of menu that evolves.

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Final Thoughts

Pi on the Fly is one of the best examples I’ve come across of what a mobile pizza operation can be when it’s run by someone who actually knows pizza. The crusts on three different styles — NY, Grandma, Sicilian — are all dialed in. The gourmet builds are creative without being gimmicky. The personality is loud, fun, and a little bit cheeky in the best way. And the operator’s history with Tri-Pi in Bloomsburg gives the whole thing a NEPA pizza lineage that you can taste in the details.

The 21-day tag campaign worked. The hour-plus drive was worth it. And I’m already plotting the next one.

My Takeaways

• 🍕 Tipsy Grandma is one of the best slices I’ve had in NEPA this year — vodka sauce on a thin, crispy Grandma crust is a revelation
• 🍅 Three styles (NY, Grandma, Sicilian) all executed with crispy, structurally honest crusts — that’s the headline
• 🧀 The Bombolone is a ricotta-stuffed Sicilian that deserves a return visit on its own
• 🥦 The Big Popper genuinely tastes like a fried jalapeño popper — not a kind-of, an exactly
• 🍕 Track the trailer on social before you go — Pi on the Fly is mobile, and the chase is part of the fun

Have you tracked down Pi on the Fly yet? What slice are you ordering first when you do? Drop it in the comments — I want to hear which of the eight is going to be your hook.

Pizza is Similar to:

Comparable spots are Luca Pizza, Rosario’s Pizzeria, Dino’s Wyoming Valley Mall

• The creative, gourmet-slice-driven energy of the best mobile and pop-up operations we’ve covered
• The Grandma-style craft tradition that runs through several NEPA shops on our list
• The NEPA pizza lineage extending back through Tri-Pi Pizzeria in Bloomsburg — same operator, new chapter

Visit Notes

Pi on the Fly
Mobile food trailer · Berwick, PA area
On the day of this visit: parked at Dipped Ice Cream in Berwick
Follow Pi on the Fly on social media to find the trailer location each day

The Full Rankings Scorecard

A quick note before the table, because the two rankings don’t perfectly line up and I want to be upfront about why.

The ranking you just read through (1 through 8) is my gut ranking — a real-time read on which slices I enjoyed the most in the moment. First bite. Second bite. The slice you can’t stop thinking about while you’re eating the next one. That ranking stands.

The scorecard below is something different. These are my technical scores, rendered about 24 hours after the visit with careful reflection on the standard six-category NEPA Pizza Review rubric — Crust, Sauce, Cheese, Taste, Crispy/Cooked Properly, and Value. They’re an honest read on how each slice performed against the rubric, separate from how much pure joy it brought me at the trailer window.

Rank	Pizza Ordered	Crust	Sauce	Cheese	Taste	Crispy/Cooked	Value	Overall
1	Grandma Pizza Vodka Sauce (Tipsy Grandma)	8.8	7.9	7.8	8.6	9.1	7.0	8.5
2	Grandma Pizza	8.8	7.7	7.8	7.9	9.1	7.0	8.3
3	New York Style Sweet Sauce Pizza	8.6	8.1	7.8	8.2	8.1	7.0	8.2
4	New York Style Big Popper Pizza	8.6	N/A	7.6	8.1	8.1	7.0	8.1
5	Grandma Style Tri-Pi Slice	8.6	7.5	7.7	7.5	8.5	7.0	8.0
6	New York Style Loaded Pickle Slice	8.6	N/A	7.5	7.5	8.5	7.0	8.0
7	New York Style Cheese Pizza	8.6	7.5	7.5	7.7	7.8	7.0	7.8
8	Bombolone Sicilian Stuffed with Ricotta Slice	7.8	7.7	7.7	7.6	8.5	7.0	7.8

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Speaking of sauce — if you’re curious how the Tipsy Grandma’s vodka sauce stacks up against the NEPA sauce field, check out our NEPA Pizza Sauce Rankings for the running leaderboard. And if you make pizza at home and want the gear I actually use, our Amazon affiliate picks are linked on the site — every click helps keep NEPA Pizza Review independent and ad-light.

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