On Saturday we were able to pick half a grocery bag of kale from the new spring growth on our plants. That will keep us in salad for a week. The plants seem to be producing new leaves at a fast enough rate to provide greens right into May or whenever they go to seed. I haven’t overwintered kale before, so I’m not quite sure what to expect.
I always pick the lower leaves, which are bigger but still tender and tasty. That way the newest leaves can continue to develop. Any that are yellowing get sent to the compost pile.