MB4 255b: What Foods are Acceptable for a Shituf Mavuyos - part 1 (386:4-6)

All food is acceptable for shituf mavuyot except for certain items which are no longer edible

The shituf food has to be enough for two meals per person (at most 18 grogerot)

Using prohibited or unripe food (e.g. a non-kohen using terumah). Using truffles, mushrooms, spices, or inedible raw food.