Local, Non Organic bagged lettuce.
While lettuce contains mainly water (95%) this is an advantage in providing hydration and as a low energy food. Darker leafy lettuces provide a range of nutrients including smaller contributions of vitamin C, iron and folate.
Some of the newer varieties such as red oak and butter crunch are more strongly coloured than the traditional varieties (iceberg), and the pigments (phytonutrients) that give them the colour have a range of potential health benefits. Most lettuce contains the pigments beta-carotene and lutein while the red coloured lettuces get their colour from anthocyanins.