LAVA Cookie Bars — K19 Food Labs

What is LAVA

Not your
usual
cookie bar.

LAVA Cookie Bars are premium handmade bars with a secret — a frozen ganache core sealed inside thick, precisely crafted dough. Four flavours. Four different cores. Baked from frozen. The outside sets golden. The centre stays gooey.

You only find out what's inside when you break it open.

"Not your usual cookie. Intense. Gooey. Unforgettable."

Dark Chocolate Chips

French T55 Dough

Molten Core

Cross-section · LAVA bar anatomy

MADE WITH
PRECISION

Every detail deliberate. No shortcuts.

125 grams · per unit

Each LAVA bar weighs exactly 125g. 110g of thick dough wrapped around a 15g frozen ganache core. Substantial. Intentional. Generous.

70% Cocoa · Callebaut

The Triple Choc core is made from Callebaut 70% dark chocolate — the same used by professional pastry chefs. Other cores crafted to the same standard.

−18 °C · Baked from frozen

Every bar is frozen solid before baking. Thermal shock creates the contrast — crisp golden edges, soft centre, gooey flowing core.

15 minutes · The rest

After baking, every bar rests untouched for exactly 15 minutes. Carryover heat sets the structure while protecting the liquid centre.

The Lava Bar Range

FOUR BARS.
ONE OBSESSION.

Triple Chocolate The Deepest Dark · Pure Decadence

Three expressions of chocolate in one bar. Dark chocolate dough, milk chocolate chips folded through, and a molten 70% Callebaut dark chocolate ganache core. When it flows — it's everything chocolate should be but rarely is.

Callebaut 70% Core Dark Choc Dough Milk Choc Chips Maldon Sea Salt Président Butter

📸Order via Instagram

Red Velvet The Bold Statement · Dramatic · Unforgettable

The most visually striking bar in the range. Deep crimson velvet dough wrapped around a creamy cheesecake lava centre. Bold on the outside. Soft and indulgent inside. The one people photograph first.

Cheesecake Core Red Velvet Dough Buttermilk Natural Cocoa

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Pistachio The Quiet Intensity · Nutty · Premium

Real pistachio paste worked through the dough, studded with crunchy pistachios, hiding a rich flowing pistachio cream centre. The most considered bar in the range. The one for people who know what they want.

Pistachio Cream Core Pistachio Paste Dough Crunchy Pistachios Maldon Sea Salt

📸Order via Instagram

White Chocolate The Smooth Surprise · Creamy · Melt-in-the-Mouth

Don't mistake pale for simple. White chocolate dough loaded with chips, wrapping a smooth flowing Callebaut W2 white chocolate ganache centre. Sweet. Creamy. A different kind of intense.

Callebaut W2 Core White Choc Dough White Choc Chips Double Cream Président Butter

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About LAVA · K19 Food Labs

Made by
hand in
London.

LAVA Cookie Bars started with a simple belief — that most cookies don't respect you. Made fast, made cheap, made to look good but not to be remembered after the first bite.

We make four bars. Each one built around a gooey lava core — hidden completely until you break it open. Handmade in London. Baked fresh. Nothing arbitrary. Nothing skipped.

"Not your usual cookie. Intense. Gooey. Unforgettable."

LAVA is a K19 Food Labs product — a London food brand built on the belief that the best ingredients deserve the most careful hands. Starting with four bars. More when they're ready.

K19 Food Labs · London · Est. 2026
@K19FoodLabs · orders@k19.co.uk

LAVA

Not yourusualcookie bar.

MADE WITHPRECISION

FOUR BARS.ONE OBSESSION.

Made byhand inLondon.

Ready tobreak it?

Not your
usual
cookie bar.

MADE WITH
PRECISION

FOUR BARS.
ONE OBSESSION.

Made by
hand in
London.

Ready to
break it?