A conserve is a cooked mixture of fruit and sugar that is usually spread on biscuits or English muffins.
Makes about 2 cups
Add the water to a saucepan. While the water is coming to a boil, slowly whisk in the sugar. Add the zests. Bring to a boil. Add the berries and reduce the heat to medium. Cook, stirring frequently for 25 minutes. Allow to cool. Cover and refrigerate for up to four days.