To Buy: 
Select bulbs that are hard and dry with no soft damp patches. Avoid onions that are sprouting.  
To Store: 
Store with the skin on in a place with plenty of air circulation. Onions will keep for at least a month. 
Peeled onions should be wrapped in plastic and stored in the fridge for 24 hours.  
Tips & Tricks: 
In macrobiotic cooking the five flavours must feature in each meal to balance the palate. They are; sweet, sour, bitter, pungent, and salty. Interestingly, onions are the sweet part of the meal as they cook and sweeten. 
Cooking Tips: 
White and brown onions are both good to use as the  base for casseroles. Onions are also delicious baked or caramelised. The longer they are cooked the sweeter they become.