you can also boil them (the shells are more pliable). cut an x in the bottom. boil a half-dozen at a time for 3-4 minutes. transfer to a bowl and cover with a damp towen for 2-3 minutes. the trick is, the batch is small but you need to move fast because as they cool the shell hardens again. PITA, to be sure, but a minor one compared to a major one.