Next is the perennial, burger-topping iceberg lettuce. You'll need 33 cups ... vision and a health immune system. This pretty red and green leaf is chard. And it's a powerhouse.

Salads don't always get their due. It's understandable -- it is easy to make mistakes with salad and end up with a mediocre side dish that's only on your plate because you know you ought to be ...

Bags of salad leaves are expensive to buy in ... Butterhead', there are many others to try, including loose-leaf types and oak leaf lettuce, radicchio, rocket and endive.