Sautéed Mushrooms Appetizer - CPastry

Ingredients

• 6.3 oz/180g Butter
• 7.8 220g Flour
• 3 1/2 0z/100g Potato Starch
• 1 Large Egg Room Temperature
• 50 mL Water
• 0.4 oz/12g salt
• 2 Tsp Vinegar
• 2 Green onions
• 1/2 Red Pepper
• 0.3 oz/8g Parsley
• 7.1 oz/200g Mushrooms
• 1 Tbsp Butter
• 1 Tbsp Olive Oil
• 1 Tsp Salt
• 1/2 Tsp Black Pepper