Question for DM's regarding Chef

[ftafp]

Suppose one of your players took the Chef feat and wanted to use some kind of magic substance (e.g. a potion, experimental elixir, goodberry, enchanted spring water, magic mushroom or primal fruit) as an ingredient. What would you do in this situation?

[Amnestic]

Ask them what ingredient they wanted to use and tailor the result based on that.

I'll use troll blood as an example.

Ingredient on hand, they'd have to make a check using their chef's tools against a DC which I'll arbitrarily set at 13. The more exotic the ingredient might make the DC higher.

Additional bonuses for the roll might include:
Freshness of ingredient (Straight from the vein=+2, Fresh=+1, Poorly Stored=-1, Rotting=-5)
Experience with the ingredient in cooking (Multiple uses=+2, A couple of uses=+0, Never used=-2).
Having an existing recipe might give a straight +2 to the check.
Knowledge of the creature (Appropriate Int check, high check=better modifier)

If they hit the DC, they make satisfactory use of the ingredient, they gain a small benefit for doing so - maybe an 8 hour +1 temp HP buff that refreshes every round. If they beat the DC by 5, they get a better result. Maybe it goes up to +3 temp HP buff per round and lasts for 24 hours.

If they miss the DC, then it's just a normal meal and the ingredient is "wasted".
If they miss the DC by more than 5, they spoil the meal and get nothing, with the normal benefits of the chef feat wasted also.

These numbers are entirely made up on the fly for this post so it's the sort of thing I'd do if it came up suddenly in a game. There's probably tweaks or things you can change here or there.

[Unoriginal]

Suppose one of your players took the Chef feat and wanted to use some kind of magic substance (e.g. a potion, experimental elixir, goodberry, enchanted spring water, magic mushroom or primal fruit) as an ingredient. What would you do in this situation?

Depends what the substance is and what the meal is.

Pouring a potion on rice so the eater is affected without knowing isn't the same as putting one goodberry in a gruel to try to give the goodberry's effect to all who eat said gruel.