Perfect for St. Patrick's Day or any day,these small green puffs are light, airy bites of mint flavored meringue with tiny bits of chocolate inside. They are very tasty and can be a little addictive! These don't keep long - plan to serve these very soon after making them. If you try the overnight method, make these before bedtime and your cookies will be ready and waiting in the morning. You can also make them early in the day and once the oven is completely cooled, they should be ready.