First time: I used a scant cup Demerara style pure cane sugar, almost two mangos, grated ginger from a frozen chunk and juice from one lemon. Turned out delicious — the ginger really adds a special flavour!
Second time: used 2 mangos and only 1/2 cup of white sugar. It turned great again.
So my recommendation is to add sugar little by little. A whole cup would probably be too much.
