Summer Berry Preserves

Ingredients

Equipment Needed

• •Wide, heavy-bottomed pot or Dutch oven
• •Four half-pint canning jars with lids and bands
• •Wooden spoon
• •Ladle
• •Jar lifter or sturdy tongs
• •Small ceramic plate for testing set

Instructions

1. 1

   Prepare your jars

   Wash four half-pint jars and their lids in hot soapy water. Place the jars on a baking sheet in a 225F oven to keep them warm and sterile. Warm jars prevent cracking when you add hot preserves. Place a small ceramic plate in your freezer for testing the set later.

2. 2

   Combine fruit and sugar

   Pick through the berries and remove any stems or bruised spots. Place them in a wide, heavy-bottomed pot. A wider pot means faster evaporation and brighter flavor. Toss the berries gently with the sugar, lemon juice, and lemon zest. Let the mixture sit for fifteen minutes. The sugar will draw out the juices, and the bottom of the pot will pool with ruby liquid.

   The lemon provides acidity that helps the natural pectin in the berries activate. Do not skip it, even if your berries taste sweet enough.
3. 3

   Begin the cook

   Set the pot over medium heat. Stir gently as the sugar dissolves and the berries release more juice. Once the mixture begins to bubble, increase the heat to medium-high. The surface will foam pink and rise in the pot. This is the moment to pay attention.

4. 4

   Cook to the set

   Stir frequently with a wooden spoon, scraping the bottom to prevent scorching. The foam will subside after ten minutes or so. The color will deepen from bright pink to garnet. The bubbles will change from rapid and frothy to slower, thicker, more deliberate. This usually takes twenty to thirty minutes. Watch the preserves, not the clock.

   If foam threatens to overflow, reduce heat briefly and stir. A small pat of butter dissolved into the mixture can help reduce foaming.
5. 5

   Test for doneness

   Take the plate from the freezer. Spoon a small amount of preserves onto the cold surface and wait thirty seconds. Push the edge with your finger. If the surface wrinkles and the preserves hold their shape rather than running back together, you are there. If it runs, cook another three to four minutes and test again. Better to undercook slightly than to make candy.

   Remove the pot from heat while you test. The preserves continue cooking in the hot pan, and an extra minute can take you past the point of no return.
6. 6

   Fill the jars

   Ladle the hot preserves into the warm jars, leaving a quarter inch of headspace at the top. Wipe the rims clean with a damp cloth. Any residue will prevent a proper seal. Place the lids on top and screw the bands until they are fingertip tight. Not forcing it, just snug.

7. 7

   Process for storage

   For shelf-stable preserves, lower the jars into a pot of boiling water, ensuring they are covered by at least one inch. Boil for ten minutes. Remove carefully and set on a kitchen towel to cool. You will hear the lids pop as they seal, a small and satisfying sound. If skipping the water bath, store in the refrigerator and use within three weeks.

   Any jars that do not seal (the lid can be pressed down and pops back up) should go straight into the refrigerator and be used first.
8. 8

   Let the preserves rest

   Allow the jars to cool completely, then store in a cool, dark place. The preserves will continue to set as they cool. Wait at least twenty-four hours before opening. They will keep sealed for up to one year, though they rarely last that long.

Chef Tips

• •Buy berries at the height of the season, usually late June through July in most regions. Ask the farmer when the berries were picked. Same-day is best; yesterday is acceptable. Anything older has already lost its aliveness.
• •A wide, shallow pot cooks preserves faster than a tall, narrow one. Faster cooking means brighter flavor and better color. Copper jam pans exist for a reason.
• •The ratio of fruit to sugar can vary. These preserves are on the less-sweet side to let the berries speak. If your fruit is very tart, you can add another quarter cup of sugar.
• •Preserves thicken as they cool. What looks slightly loose in the pot will set up properly in the jar.Trust the plate test more than your eyes at the stove.

Advance Preparation

• •Sealed and processed jars keep at room temperature in a cool, dark pantry for up to one year. The flavor is brightest within the first six months.
• •Refrigerator preserves (unprocessed) will keep for three weeks. They often have a softer, more spreadable texture.
• •Preserves can be frozen in freezer-safe containers for up to one year if you prefer not to can.

Frequently Asked Questions

Nutrition Information

1 serving (about 20g)