yogurtsim

fermentation guide

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yogurtsimLactose-free milk kefir recipe

yogurtsim.com is an educational estimator. Real outcomes depend on your milk, starter freshness, equipment, and hygiene. It is not food-safety advice.

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Lactose-free milk kefir recipe guide

Lactose-free milk kefir recipe with pre-selected milk, culture and temperature. This simulation uses lactose-free whole milk with kefir grains.

The simulator above opens with this recipe's milk, starter, heat step, temperature and taste targets pre-selected. Adjust them to match your ingredients and kitchen.

Why these settings?

This simulation uses lactose-free whole milk with kefir grains. It is a comparison of the catalog milk sugars; it does not establish long-term grain performance in a different feeding milk.

Starting ingredients and settings

Plan your batch

  1. Use lactose-free whole milk without a separate heat step for this preset. Bring it to 22 °C before adding the culture.
  2. Add Heirloom Milk kefir grains using the starting dose of grains 1 : 20. Follow the culture supplier's instructions for activation and dosing.
  3. Use Countertop at 22 °C. The simulator explores up to 26 hours; use the predicted ready window and the cook-along to plan your batch rather than treating the full window as a fixed fermentation time.
  4. Separate the kefir grains from the finished kefir, then refrigerate the kefir.

These are starting defaults, not a guaranteed outcome. Check the simulator’s warnings and science sources for your chosen milk and culture.

Recipe

Time

Results

Warnings

hi, yogurt friend

Pick your milk and starter and watch them turn into yogurt, kefir or skyr in seconds: when it sets, how tangy and thick it gets. Then make it walks you through the real thing, timers and all.

Tip: tap, drag or shake the jar. On a phone or tablet, turn on tilt & shake in the menu to slosh it for real.

An educational estimator: real batches depend on your milk, starter, equipment and hygiene. Not food-safety advice.

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about yogurtsim

A playful flight simulator for homemade yogurt, kefir and friends. The model is anchored in the fermentation literature, but many numbers are estimates and are labelled “est.”.

yogurtsim.com is an educational estimator. Real outcomes depend on your milk, starter freshness, equipment, and hygiene. It is not food-safety advice.

Using a keyboard or a game controller? Press ? for the shortcuts.

keys & controller

playback

Space
play / pause
← →
10 minutes back / on
Shift+← →
an hour
D
jump to the best moment
C
bars ↔ chart
chart (Tab to it)
arrows scrub with a readout, Shift an hour, Home / End
J
jiggle the jar
jar (Tab to it)
arrows jiggle, Space pokes, S stirs; a click on the jar keeps the playback keys
+ −
zoom in / out (jar → slice → microscope → molecules)

recipe & sections

E
edit the recipe
M
make it for real
F
fix my yogurt
L
batch journal
⌘/Ctrl+Z
undo a recipe change
⇧+⌘/Ctrl+Z
redo
Tab
next control; arrows move inside a group, Enter picks a style
Esc
close
?
this card

game controller

left stick
hold and jiggle the jar
right stick
stir with a spoon (gently!)
LT RT
scrub time
D-pad
move between controls; ← → nudge a slider
A B
press · back
X Y
edit the recipe · tap the jar
LB RB
previous / next milestone
R3 L3
zoom in / out
Start
play / pause