8 cups of fresh blueberries (frozen is ok)
4 cups of water
2 cups of sugar
1/3 of a lemon, cut into 2 pieces
1 tsp cinnamon or cardamon
Bring all of the above to a rolling boil, then simmer for 5 minutes.
While that is happening, mix 7-8 tsp cornstarch into 4 Tbsp cold water until smooth.
Slowly mix into blueberries (after 5 min simmer), then simmer for another 2 minutes, stirring occasionally.
Chill(covered) in fridge for at least 2
hours.
Many people eat it hot or at room temp, but I like it cold. Top with whipped cream.
NOTE: This method works well with strawberries, currants, and gooseberries, but something not so tasty happens with raspberries.