This is the most vivid yellow I’ve made so far. It only took the peels of about ten lemons to make 2x this (there will be much, much less when it dries.) I used the juice to shift the colour in my red cabbage dye, and to make a zesty screwdriver.

Lemon juice is a slightly lower PH than cleaning vinegar, so it doesn’t take as much.

I should have taken a pic of my tests when I filled a handful of small jars with the lemon dye to determine which chemicals to use. The combination of aluminum phosphate(alum) and sodium carbonate(washing soda) turned it red, but aluminum sulphate and washing soda didn’t shift the colour at all.

Copper mordant bleached it a tiny bit and iron mordant turned it brown.