Stem and pit cherries. I love using this cherry pitter. Coarsely chop fruit with a sharp knife or chopper. You can also give a few pulses in the food processor - not too many though, you want chunks of fruit in your jam. Measure exactly 2 cups of cherries into large microwave-safe bowl. Stir in the sugar. Let stand 10 min., stirring occasionally.

Combine water and pectin in small saucepan and stir till pectin is dissolved. Bring to boil on high heat, stirring constantly. Boil 1 minute, stirring constantly. Add to fruit mixture along with the lemon juice and stir 3 full minutes.