Melt the chocolate in a medium-size microwave safe bowl for 30 seconds, then stir.
Continue microwaving and stirring in 30 second intervals until the chocolate still has a few unmelted lumps in it. Stir until smooth.
Carefully add the mint extract and stir. Start with 1/4 teaspoon and go from there. Don't overdo it!
Add the almonds to the bowl and stir to coat.
Lay a large sheet of parchment or wax paper out onto a work surface. (If you plan to refrigerate them to cool faster, place on a baking sheet).
Use a fork to carefully remove each almond and place on the paper. You want to make sure they are separated so that they don't cool in clumps.
While they are still wet, sprinkle with coarse sugar.
Let dry completely. You can speed this up by putting them in the fridge or freezer.
Once the chocolate has hardened, you can store them in the almond can that you have leftover, or in a tupperware. Keep in a cool place or the fridge.
Notes
*This can go from delicious to inedible in one slip of the hand. Toothpaste-flavored almonds is NOT what we're going for here. So start off slow, you can always add more!