Purify Food and Drink

1st-Level Transmutation (Ritual)
Casting Time: 1 action
Range: 10 feet
Components: VS
Duration: Instantaneous

You remove poison and rot from nonmagical food and drink in a 5-foot-radius Sphere centered on a point within range.

When cast during Survival, you can take the Prepare (Food) or Purify (Water) action using your proficiency bonus plus your spellcasting modifier instead of the normal roll.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the area of the spell doubles for each slot level above 1st. During Survival, you can take an additional one of these Survival actions or give yourself expertise on one of the rolls for each spell level above 1st.

Source: PHB 270, SRD

Changelog

Added upcasting option.
Changed to new PHB version, improved upcasting option to double the area.
Added Survival functionality.