Mirepoix Basic veggies for everything By Guest Contributor August 18, 2011 Vegetarian Preparation Time Cook Time Servings0IngredientsCeleryCarrotsOnionInstructions Step 1: Chop veggies into small, similarily sized pieces Step 2: Cook over medium heat in a frying pan Step 3: Butter the pan Step 4: Cook the onions first, they take longest, then add celery and carrots. Step 5: Step 6: Used as a flavour base for alot of stews etc, and goes great with everything.