Blueberry Jam

I took a trip down to Adams Berry Farm a few weeks ago, and the blueberries were in full swing. Jam time! This is another easy jam recipe. Again, no pectin, but this time I got a nice set - it isn't runny at all. The recipe is from the Joy of Cooking (Rombauer et al).

Start with 2 lb fresh blueberries. Wash them, drain them and put them into a large pot. Crush some of the berries roughly. Heat the pan until the berries simmer, and then continue to simmer until they just soften (this will not take very long).

Add 5 cups of sugar. Bring to a boil and continue to boil hard, stirring occasionally, until the mixture reaches the gelling point (221 F at sea level). When this happens, remove from the heat, skim off any foam and fill 5 sterilized half-pint canning jars, leaving 1/4 inch of headspace at the top of the jar. Close lids (also sterilized) tightly. Process in a boiling water bath for 10 minutes, and check to see that they sealed correctly.

Note 1 - Make sure that you know what you are doing before attempting canning, as mistakes could lead to serious contamination and potentially death. If you need instructions, consult the USDA Complete Guide to Home Canning.

Note 2 - Metric Info: 2 lb = 900g; 5 cups = 1.2 l; 221 F = 105 C.