Mango Jam

Scrape the pulp from ripe mangoes and mash. Use stainless knife nd utensils to prevent discoloring. Measure, and to every cup of the pulp add 1/2 cup white sugar. In case of sour mangoes, increase sugar to 2/3 cip. Stir while cooking until it thickens. Pour while hot in jars. Sterilize quart jars for 30 minutes, pint jars for 25 minutes.