Peel half-ripe mangoes, slice and measure in cups.
Add 3/4 cup of water and 1/4 cup of lemon juice to each cup of fruit.
Place in a saucepan and cook till just soft.
Add 1 cup of sugar to each cup of fruit pulp.
Half a cup of peeled and chopped almonds and 2 teaspoons of almond essence may be included to give more flavour.
Boil till jam sets.