As our resident lettuce expert perhaps Tipsy can offer some words of wisdom.
Why can I not buy varieties of lettuce unless I buy a bag of mixed leaf?
Bags of mixed leaf, once opened, go soggy within a day or so. There is too much in a bag to eat in 24 hours unless you are a family of rabbits but only occasionally do I see a whole lettuce of any variety other than Iceberg (which I hate)
Yet when I was a kid Me Dad (and his Dad too) used to grow several varieties. Once cut at the stalk Mum would place them in a bowl of water with a little piece of coal and they stayed fresh for a week. Now I have to buy a bag of mixed leaf and within a few hours of opening the leaves are all slimy and have to be thrown away.
I reckon that we throw away over half of each bag. Good for the supermarkets no doubt but not good for the household budget.