When choosing green beans, whether fine or runner, select those that snap easily and are crisp and juicy. Mangetout and sugar snaps should also be crisp and firm.
1. Fine green beans require topping only. If young and tender they can be left whole.
2. Runner beans need to be topped and the string running the length of the bean removed either by pulling or cutting off.
3. Mangetout and sugar snaps also require topping and de-stringing. These are both more tender than green and runner beans and only require brief cooking.