The full list of custom recipes.

Recipes Description
Realistic amount of stairs.
Coal to black dye.
Craft dark prismarine with black dye.
Craftable cobwebs.
Uncraftable slabs.
Dyeable sand.
Universal dyeing.
Uncraftable stairs.
Dropper to dispenser.
Uncraftable blue/packed ice.
Uncraftable nether wart block.
Uncraftable wool.
Craftable player heads. Change username with /skull <username>
Phantom membrane recipe.
Craftable sponge.