Open the recipe in the editor.
In the Ingredients list, find the row you want to adjust.
Click on the drag handle and select Set Scaling Factor.
Type a value into the Scale × field. Allowed range is 0 to 5, with up to two decimal places.
Click Apply.
As you set the factor, the dialog shows a live preview of what it does to that ingredient at a batch size you choose, for example "→ 3.2 tbsp (linear 4 tbsp, −20% at 256 servings)." You can type the factor directly, or instead enter how much less than linear you want at that batch size and Gaia works out the matching factor for you. The scaling factor only reduces amounts as a recipe is scaled up above its base yield, so the "% less than linear" input applies above the base yield.
A small "Scaled" chip appears next to any ingredient with a non-default factor so you (and anyone else viewing the recipe) can see at a glance which rows scale differently. The chip shows on:
The recipe scaling calculator
The printed recipe PDF
The public recipe view
