For the gelly, mix 1 gr of agar, 70 gr of sugar and 100 gr of water. Boil briefly and reduce slightly, until you can form drops off a spoon.
The Migros' brand is 22% agar, so here you'd use 8 gr of the mix (= 1 pack), 112 gr sugar, 160 gr water.
Make drops (which you can also use for any other summer sweets): Drop on baking sheet, that's it.
Colour slightly, place into shallow container and rest in fridge for 1 hour before cutting.