Hearty Meal

Since you have spent many years perfecting your craft of cooking, you can provide hearty meals to your allies. During a short rest, you can cook a meal with supplies that you have gathered and serve the meal to up to 4 players. 

To cook a Hearty Meal, you must use 2 Major Ingredients & 1 Minor Ingredient
(Major Ingredients are Meats, Vegetables, Fruits, etc. Minor Ingredients are Water, Spices, Herbs, etc)

When the meal is consumed roll 1d4 and all players who ate the meal gain that many hitpoints.
Then roll a d20 + proficiency bonus, then your DM will refer to the Meal Quality Table:
(If the recipe is known, roll with Advantage)

0-5 = Roll on the Terrible Meal table
6-14 = Roll on the Average Meal table
14-19 = Roll on the Good Meal table
20+ = Roll on the Excellent Meal table

Learn a Recipe

After the meal is consumed, you can choose to take note of the recipe if the meal resulted Good or Excellent.
If you do, take note of the ingredients used and how it was prepared.

To cook a known recipe, you must use the same ingredients and prepare it the same way.