JayArr Chocolate / Tools

The chocolate workshop.

Seven working instruments, built on makers’ own numbers. Every one on this page is live: drag a slider, tap a flavour, and take what you make into the full tool.

07instruments
to play with

A cutaway cocoa press, with a golden stream flowing into a glass bowl
INTERACTIVE STUDY / THE COCOA PRESS

Cocoa, under pressure.

Weigh the cocoa you have: see the cocoa liquor it began as and the butter the press took out, then put it back for a bar or a recipe.

Step inside the press

Your 250 g of cocoa began as 494 g of cocoa liquor. Pressing took 244 g of cocoa butter out of it.

Watch it press

02Formulate

The Chocolate Lab

Your recipe, the name it legally earns in the US and the EU, and the batch to weigh out.

US name
Bittersweet chocolate
EU name
Chocolate
Sugar
30%
Weigh out this bar

03Refine

The Melanger Guide

10 stone grinders judged by each maker’s published loads, then a run, hour by hour.

  • Chocogrind Max 2 kg
  • Spectra Mini Max 1.5 kg
  • Refiner 8 lb Fits
  • CocoaT5 Check
  • Spectra 11 Fits
  • Tilting 10 lb Fits
  • CocoaT 12SLTA Min 3 kg
  • Spectra 20NB Ask first
  • Spectra 25NB Ask first
  • ALPHA100 Oversized

3 of 10 fit 2.5 kg in one run; the cheapest is the Refiner 8 lb, $440.

See all ten at 2.5 kg

04Temper

The Tempering Station

19 curves from 7 makers’ own guides, a thermometer coach, and the cocoa-butter crystals at every step.

31.2 °C · WorkMelt 45–45 °CWork 31–32 °C

Forms V, VI can hold; the other 4 melt.

Temper it step by step

05Price

The Cost Ledger

Real ingredient prices, card, Etsy or wholesale fees, and 299 real bars to price against.

$14.00 a 60 g bar · 52% margin

costs $6.34, your time included
$10$20$30$44+
At $23.33 per 100 g, your bar is dearer than 184 of the 299 craft bars from 16 makers’ shops (green: the bars it costs more than).

You keep $7.22 a bar after card fees.

Cost your own bar

06Explore

The Origin Atlas

25 cacao origins in makers’ own words, with their harvests, their tonnes and two bars to try from each.

origins
25
flavour families
13
makers quoted
31
Hawaiʻi

9 origins have citrus in their makers’ notes. Tap one to read them.

See the 9 citrus origins

07Taste

The Tasting Room

384 bars on sale from 30 makers, found by the flavours their makers name. Build a flight and print the tasting sheet.

bars on sale
384
makers
30
flavour families
13
Red fruitCitrusTropicalDried fruitFloralSpiceCaramelCreamyNuttyCocoaRoastyEarthyBoozy87red fruit

87 bars on sale whose makers name red fruit & berries, most often cherry, berries, strawberry, raspberry, cranberry. Three of them, in the makers’ own words:

See all 87 red fruit bars

How these are built

Makers’ own numbers. Tempering curves from Callebaut, Valrhona and others; melanger loads from each maker’s pages and manuals; tasting notes quoted word for word.

Dated, and checked again. Prices and stock carry the day they were read, between 1 and 5 October 2026; FAOSTAT, ICCO and 21 CFR 163 are linked where they’re used.

Yours to keep. Every tool keeps its settings in a link you can copy; the Lab, the Tempering Station, the Cost Ledger and the Tasting Room print a clean sheet for the bench.

Made for learning by doing.Visit the reading room →