The beauty of onion soup is that it is simple to make and needs little advance planning. Most of us have onions, a little butter, some stock and white wine on hand. If not, they are easy ingredients to procure. The tears are the only unavoidable pitfall as you slice the onions - there is no avoiding it. My onion goggles, a gift from a friend, have never worked. I’ve tried chilling the onions first, burning a candle as I chop but that doesn’t help either. However, a good, sharp knife does.