Ambrosia

You regain 2d10 + 15 hit points when you eat the food of the gods 

However

You much make a Constitution saving throw after you have healed to see if your mortal vessel can handle it. 

On a failed save you take 5d6 Fire Damage 

DC starts at 10, but for every piece you consume before a long rest the DC increases by 5 

Notes: Bonus: Hit Points, Exhaustion, Healing, Consumable