The last few years I've had success growing romaine and other leaf lettuces. I usually try to harvest only as much as we need for a day (or couple days). That often means just a few leaves at a time Is it best to cut the leaves as close to the ground as possible and, if you do, is there any chance that those leaves will regrow?
Also, if I'm only taking a few leaves from a bigger plant is it best to take them evenly from the perimeter and slowly work inwards? Or better to do one section inwards so you get a mix of inner and outer leaves?
In short, what's the best way to harvest lettuce to insure maximum yield and the best taste?