Wash 3 limes thoroughly with hot water and rub dry. Peel the peel thinly (without the white skin) with a peeler or a small sharp knife. Cut the peel into fine strips (approx. 15 g)
Peel the 3 peeled limes and 10 more in such a way that the white skin is completely removed. Remove the fillets with a sharp knife between the parting skins and place them in a bowl. Squeeze the parting skins well. Place the fillets on a sieve and collect the juice (approx. 125 ml juice and 380 g fillets)
Squeeze 7 limes (210-230 ml juice) and pour together with the collected juice (125 ml). Add lime zest, bring to the boil and simmer for about 1 minute. Let juice and peel cool down. Wash the mint, shake dry and pluck the leaves from the stalks. Cut the leaves into fine strips
Mix lime fillets, cooled lime juice and jam sugar well in a large pot. Bring to the boil while stirring, add cachaça and mint. Cook over high heat for 4 minutes while stirring
Fill lime jam hot into clean glasses and close them immediately. (Place twist-off jars on the lid for about 5 minutes after filling)
waiting time approx.1 hour