Create mod adding fluid buckets to basin recipes

Basically, I'm making a mod to add even more chocolates but I can't get the Basin item when I put the bucket of liquid down to make the fluid I want it to but when I leave it blank it makes the fluid just fine. Does anyone know how to configure this so that when I place a bucket of said item in a filter slot, it'll recognize the liquid as the same thing as the bucket?

This would also help with getting smart pipes to also correctly drain the right liquids which is what my main focus here is.

Can anyone help me please?