neoforge, Creative mode. I have uninstalled all other mods for the game, leaving only ExtraDelight(version 2.2.1) and Farmer's Delight (version 1.2.6) installed.
Coffee is not drinkable.
Oil is not drinkable either and can be placed on the ground like a carpet. It can also stack on itself like a carpet and cannot be retrieved using a bucket or bottle.
Vinegar is also not drinkable and cannot be placed on the ground.
And, I'm not sure if this is intentional, but the coffee cake does not contain coffee as an ingredient. Instead, it uses cinnamon.

Coffee not drinkable is a known issue.
Why would oil be drinkable?
Break the oil "carpet" to pick it back up.
Why would vinegar be drinkable?
It's not supposed to be placed.
Coffee cake doesn't contain coffee, it's served with coffee.