Small-batch jam maker and road trip DJ. Every song on my playlist is a jam, literally. Sugar and lemon math for fridge jam below.
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Weigh your prepared fruit, pick a ratio and the Only Jams calculator gives you sugar in pounds and cups plus lemon juice. Two pounds of fruit at the classic 3 parts sugar to 4 parts fruit is 1.5 pounds of sugar, about 3.4 cups, plus 2 tablespoons of lemon juice. This is for fridge jam; canning means following a tested recipe.
Hull and chop a pound of strawberries, add the sugar from the Only Jams calculator and a tablespoon of lemon juice, and let it sit 20 minutes. Boil, stirring often, until it passes the cold plate test. Jar it, cool it and refrigerate.
A kitchen scale makes jam more consistent than cups, because chopped fruit packs differently every time. Weigh the fruit after you hull, pit and chop it. Your jam will thank you by actually setting.
You're my jam. We make a great pear. I love you berry much.
Put a small plate in the freezer before you start. Spoon a little hot jam onto it, wait a minute, and push it with your finger; if it wrinkles, it's set. If it runs, keep cooking and test again.
Mash blueberries lightly, add sugar and lemon juice, and cook at a steady boil, stirring as it thickens. Blueberries set with a little patience. Test on a cold plate before you call it done.
Choose the lower-sugar setting in Only Jams for 1 part sugar to 2 parts fruit by weight. One pound of berries needs half a pound of sugar, a little over 1 cup. Lower-sugar jam is softer and belongs in the fridge or freezer.
I brought homemade jam on the road trip. Now we're stuck in a traffic jam with a jar of jam. It's very on brand.
If you want shelf-stable jars, follow a tested recipe from the National Center for Home Food Preservation exactly. Don't swap in your own sugar or fruit ratios for canning, because they affect the set and the safety. The Only Jams calculator is for fridge and freezer batches only.
Lemon juice adds acid, which helps pectin gel and brightens the fruit flavor. Low-acid fruits especially benefit from it. Bottled lemon juice gives you consistent acidity.
For fridge jam, wash jars and lids in hot soapy water, rinse well and let them dry. If you're canning, follow the jar prep steps in your tested NCHFP recipe instead. Clean jars are happy jars.
My jam set so hard you could stand a spoon in it. I call it 'fruit fudge' now. Nobody complains.
Hit the road trip jam session button on Only Jams for a made-up playlist of jam puns. Today's hit: 'Traffic Jam (Strawberry Remix).' Sing it loud, your passengers love it.
Jam foams and climbs as it boils, so use a pot that's at least four times bigger than your fruit. A tiny bit of butter can calm the foam. Sticky stovetops are a summer tradition we're ending today.
If fridge jam didn't set, pour it back in the pot and boil it a bit longer, testing on a cold plate. Or call it fruit syrup and pour it on pancakes. No one has to know.
The strawberries saw me grab the big pot and started packing their bags. Too late, sweeties. You're getting preserved.
Got 3 pounds of strawberries? At equal parts fruit and sugar, Only Jams says 3 pounds of sugar, about 6.8 cups, plus 3 tablespoons of lemon juice. Freezer jam keeps up to about a year in the freezer and about 3 weeks in the fridge.
As jam thickens, the sugar can scorch on the bottom fast. Stir more often as it gets close and keep the heat steady. Burnt jam smells like regret.
Score an X on the bottom of each peach, dip it in boiling water for about 30 to 60 seconds, then move it to ice water. The skins slip right off. Chop, weigh, and you're ready to jam.
My husband thought 'jam session' meant guitars. It meant me, a pot and 6 pounds of berries. He's on lid duty now.
Boiling jam gets hotter than boiling water and it sticks to skin. Keep kids and pets out of the kitchen while it cooks, and use a long-handled spoon. Safety first, toast second.
Add a label with the flavor, the date and 'Keep refrigerated' if it's fridge jam. Tie on a little spoon with twine. Instant hostess hero status.
Toast is just a crunchy plate for jam. Crackers are tiny plates. Spoons are honestly the most honest option.
Fridge jam goes into clean jars, cools, then goes straight into the refrigerator. Use a clean spoon every time so you don't add crumbs or germs. Toss any jar that shows mold.
Swirl a spoonful of jam into yogurt or oatmeal, spread it on a grilled cheese, or warm it as a pancake topping. A little goes a long way. Breakfast just got a glow-up.
Every road trip needs a jam. I mean a song. I also mean a jar, packed in the cooler.
Use ripe, flavorful fruit and trim off bruises or soft spots. Slightly underripe fruit has more natural pectin, which is why some recipes mix in a little. Moldy fruit goes in the trash, not the pot.
Cooked jam without added pectin typically reaches its gel point around 220°F at sea level. At higher altitudes that number drops about 2°F for every 1,000 feet. A thermometer plus the cold plate test is a power couple.
Leave space at the top of freezer jam containers because it expands as it freezes. Use containers made for the freezer, and label them with the flavor and date. Future you loves a labeled jar.
Skim the foam off the top before jarring for a prettier, clearer jam. The foam is perfectly edible, so spread it on toast as the cook's treat. Waste not, want not.