Easy peasy: Frozen peas retain their flavour, texture, colour and nutritional value - Mowie Kay The emeralds of the vegetable world are easily the most useful frozen vegetable. What’s more, because peas are frozen so quickly after picking, they retain their flavour, texture, colour and nutritional value. In my humble opinion, frozen is best. Unless, of course, you’re able to pick them straight from the garden immediately before cooking, while they’re still tender and sweet.