Cooking with Claud: Creamed Peas

 INGREDIENTS:
-- 2 tbsp olive oil
-- 1 medium onion (finely chopped)
-- 2 tbsp all-purpose flour 
-- 1 cup low-sodium vegetable or chicken stock
-- 1/2 cup of half & half
-- 1 package of peas
-- 1 lemon (zested)
-- (optional) mint