Liqueur with Black Berries

Ingredients
1 kilogram of black berries
1 liter of vodka
1/2 kg of sugar
Juice of half a lemon

Method
Wash the berries well and with the purée tool we press them a little to soften.
Put them in a jar with the sugar and vodka and seal it well.
Put it in a shady place near the sun.
Leave it there for 1 month while shaking it frequently to dissolve the sugar.
Finally, strain it with a tulle and put it in glass jars.