Grapefruit Jam Recipes

GRAPEFRUIT MARMALADE

Steps:

• Inspect two 5-ounce jars for cracks and rings for rust, discarding any defective ones. Immerse in simmering water until marmalade is ready. Wash new, unused lids and rings in warm soapy water.
• Thoroughly wash and dry the grapefruits. Run a zester around 2 grapefruits to produce ribbons of zest. Set aside. Cut away thin strips of peel from the other two grapefruits with a sharp paring knife.
• Peel off all remaining outer white parts of the fruit and discard. Cut the grapefruits into wheels. Remove any seeds.
• Put grapefruit wheels and zest strips into a non-reactive saucepan. Add sugar and stir well to cover fruit. Heat over medium-high heat until bubbling, mixing constantly. Smash the heated fruit until it liquefies. Reduce heat to low and cook over a steady boil, stirring often. Remove and discard any persistent white froth that won't disappear after being stirred. Continue to cook for about 10 minutes until marmalade begins to coat the back of a spoon.
• Add zest ribbons and cook for 5 minutes more. Place a small amount of marmalade on a plate and put it in the freezer. Test the consistency after 3 minutes.
• Remove the marmalade from the heat when the freezer sample meets your desired consistency.
• Pack grapefruit jam into hot, sterilized jars, filling to within 1/4 inch of the top. Run a clean knife or thin spatula around the insides of the jars to remove any air bubbles. Wipe rims with a moist paper towel to remove any residue. Top with lids and screw rings on tightly.
• Place a rack in the bottom of a large stockpot and fill halfway with water. Bring to a boil and lower jars 2 inches apart into the boiling water using a holder. Pour in more boiling water to cover jars by at least 1 inch. Bring to a rolling boil, cover, and process for 10 minutes.
• Remove the jars from the stockpot and let rest, several inches apart, for 24 hours. Press the center of each lid with a finger to ensure the lid does not move up or down. Remove the rings for storage and store in a cool, dark area.

SMALL-BATCH GRAPEFRUIT JAM

Steps:

• Place a saucer in your freezer for the wrinkle test, before you begin.
• Prepare the grapefruit: Cut off the top and bottom of a grapefruit and sit flat on a cutting board. Using a sharp knife and starting from the top, cut off the peel along the sides, working your way around until it is all removed. Turn grapefruit over and remove any remaining peel. You should not have any peel or pith left on the fruit.
• While holding the grapefruit over a large bowl, cut between the membranes of the fruit to remove a grapefruit slice. Continue to remove all the slices and give it a gentle squeeze to remove a bit of the juice. Repeat with all the grapefruits.
• Cook the jam: Add the grapefruit and juice to a large, non-reactive, heavy bottomed pot. Add the sugar and stir well to combine. Bring the mixture to a boil, over high heat, stirring regularly until the sugar dissolves. Once the mixture reaches a steady rolling boil, allow to continue boiling, testing regularly with the "wrinkle test", until it's set. It will take about 10-15 minutes. You can also monitor using a thermometer. The jam will set somewhere around 220° F., but the exact temperature will vary a bit, depending on your altitude, so verify setting with the wrinkle test.
• Ladle jam into small jars. Cover and refrigerate to use in the short term. Jam will keep several months in the fridge. (*As it is not properly "canned", do not store at room temperature).

GRAPEFRUIT MARMALADE

Steps:

• Sterilise the jars you'll be using to store the marmalade.Choose glass jars with an airtight, metal lid and ensure they have been washed in the dishwasher or by hand in hot soapy water then rinsed well.Check that the metal lids do not have rubber inserts. (See Note 9)Preheat the oven to 130 Degrees C (270 F) and place the jars in the oven for 15-20 minutes.
• Place 2 saucers or small plates in the freezer, ready to check for the setting point of your marmalade.Thoroughly wash the grapefruit and lemon. Remove each end of the grapefruit to get rid of excess pith. Remove each end of the lemon. Cut the grapefruit and lemon into quarters length ways. Holding two of the quarters together, slice as thinly as possible and remove any seeds.
• Place the citrus slices in a non-reactive bowl. See Note 4. Add the 6 cups of water, cover the bowl and leave the fruit to stand overnight, up to 24 hours. If your bowl is not large enough to accommodate all the water, add what you can and add the remainder the following day. It's best to make a note of what you have added.The following day, place the fruit and water into a very large, non-reactive saucepan. - See Note 5.
• Over medium-high heat, bring the fruit and water to the boil. Rapidly boil for approximately 15 minutes or until the peel is tender, stirring occasionally with a long-handled wooden spoon - See Note 6.
• Add the sugar and stir well to dissolve it. After dissolving the sugar, return the fruit to the boil, stirring occasionally. Continue to stir until the marmalade reaches setting point - I start to check at about 10 minutes. When the very aggressive bubbles subside to a slower, gentler boil, that's an indication that your marmalade may have reached setting point - See Note 7.Remove from the heat to conduct the wrinkle test. If not set, continue to boil for another 1 minute and then test again.
• To test for setting point, I use the "wrinkle" test. Take one of your saucers from the freezer and pour a small amount of marmalade onto it. Let it cool for a minute then push against the marmalade with the tip of your finger. If the surface wrinkles slightly, it means setting point has been reached.Alternatively, if you are not confident checking this way or are not experienced at making marmalade, you can use the fail-safe method of using a jam/candy thermometer which you clip to the side of your saucepan. When attaching your thermometer, make sure that the base is not touching the bottom of the saucepan. Your marmalade has reached setting point when the temperature reaches 104.5 degree C or 220 degrees F. (Taking it much higher than this will result in the marmalade being overboiled, the pectin being destroyed, and therefore, your marmalade will not set.)At this time, your marmalade will look very liquidy - it can take 24-48 hours to completely cool and set.Please note, this recipe will produce marmalade which has a soft set; it will not be as firm as many commercial varieties which often contain additives.
• Take the mixture off the heat. If there is any scum on the marmalade, add a teaspoon of butter and stir; that should settle the scum.
• Let the marmalade stand for about 10 minutes to allow the fruit to settle. If you bottle it immediately, the fruit will not be evenly distributed but will settle at the top of the jar.
• Remove your jars from the oven and carefully ladle the marmalade into the heated, sterilised jars. The jars should be filled as full as possible to minimise the amount of air between the marmalade and the lid. The marmalade should not touch the lid. Seal tight once filled with marmalade. See Note 8You need to be very careful. Splashing yourself with hot marmalade will result in a very serious burn. I suggest you have clothing with long sleeves and ensure that you do not have children nearby.

GRAPEFRUIT JAM RECIPE

Steps:

• Cut off the tops and bottoms of the grapefruit, and then cut each grapefruit into quarters. Using a sharp knife, cut the fruit from the rind and pith. Then, working over the pot you'll be using to cook the jam, separate the fruit into segments. Use your fingers to gently peel each segment from its surrounding membrane so that you are left with only the fruit. Squeeze the membrane over the pot in order to collect any juices before discarding (or, collect the membrane, pith, and seeds in cheesecloth, bundled and tied at the top, to boil with the jam for some extra natural pectin). Prepare your canning supplies. Bring the temperature of the glass jars up by processing them in hot water for several minutes, and heat a few cups of water in a small saucepan for the lids. Add the sugar to the grapefruit and over high heat, bring the mixture to a boil. Boil hard, stirring constantly, until the mixture reaches the gel stage, about 20 minutes longer. When you reach the gel stage, skim off any foam and ladle the hot jam into the hot jars, leaving 1/4″ headspace. Place the lids and bands on top, screwing on the bands just until fingertip-tight. Place the full jars back into the boiling water and process 10 minutes. Remove from the water and place the jars on a towel. Let the jars cool. The seals should suck down (you'll hear a popping noise as they do). Makes about 4 eight-ounce jars.