Mix the flavoured and unflavoured gelatin with cold water in a measuring cup while stirring constantly.

Allow the mixture to rest for at least 10 minutes to allow the gelatin to absorb the cold water

Melt the gelatin by putting the measuring jug into a pot filled with simmering water

Add the powdered vitamin C for a sour taste.

Fill up the tray with gelatin by using a turkey bastor

Let the mixture cool down and it's ready to serve