Hi Bri, yes you can substitute plums for the peaches in this recipe as they both contain more or less the same acidity levels, plum jam sounds delicious and hopefully we will be able to make a batch of plum jam next year from our young trees. Good luck and enjoy your jam!

Hi Rick, congratulations on your potato harvest! As far as the ratio of peach to sugar, we found that 1 cup of sugar weighs 8 ounces or a half pound, that is where the 4:1 ratio comes from as it is 4 pounds of peaches to 1 pound of sugar. I would just be sure you have at least 1 pound of sugar to 4 pounds of peaches and proceed from there, you can go a little heavier on the sugar if you prefer as well as this recipe is quite low in sugar compared to most “low sugar” jams. Hope that helps and good luck!

So on the peach jam, your instructions say to go 4x fruit 1x sugar by weight. It then says 4 lbs peaches 2 cups sugar. I find I need more sugar than 2 cups to get to 1 pound of sugar, to make the 4 to 1 ratio. Am I missing something ?

Keep up the great work!

Hi Heather, you can use honey as a substitute for sugar but it is recommended to sub out only half of the amount of called for sugar with honey, using honey will also lead to a more runny jam so it may need to be cooked slightly longer in hopes of it thickening up more. Try using 1 cup granulated sugar and 1 cup honey for 4 pounds of peaches, hope that helps and good luck!