Quince Jelly Recipe

I haven’t made much jam lately. I was very excited about the process when I was just learning about it some years ago, but I soon realized it was hardly a thrifty pursuit in my case: because I live in the city, I have no need to preserve a hypothetical glut from a garden or orchard, and the price of fresh organic fruit is such that I only buy what we’ll consume in season.

I have occasionally helped my mother prepare batches of jam while on vacation at my parent’s mountain house in the summer, when it is possible to strike good deals on crates of berries or apricots at the greenmarket. Aside from that, my jam-making ambitions have been placed on the back burner.

But then I received a big gift of quinces a few weeks ago, and in addition to the poaching and the cake baking, I was inspired to make quince jelly, one of the most classic uses of the pectin-rich fruit.

In a few months, when the jelly has had time to age a bit, we’ll pop a jar open and spread some on our morning slices of pain au levain, with or without a thin insulation layer of semi-salted butter.

I turned to jam guru Christine Ferber for guidance, and followed the recipe that’s in her comprehensive book Mes Confitures.

Making quince jelly is a two-step endeavor: first, you cook chunks of whole quinces (good news! no need to peel or core them!) in water until soft. You then filter the juice they’ve produced and, after giving it a good night’s rest, you boil it with sugar and lemon juice (the acidity makes it possible for the pectin to gel*) until the jelly is concentrated enough to set.

The amount of sugar you add in the second step depends on the volume of quince juice you get out of the first, and the different recipes I’ve looked at instruct you to add anywhere between 600 grams and 1 kilogram (3 to 5 cups) sugar for each liter (or quart) of juice.

Contrary to what one might intuitively think, this has no effect on how sweet the resulting jelly is: jelly sets on the condition that it’s been brought to a target temperature of 103-105°C (or 217-221°F; at sea level), at which point the sugar concentration is 65%**. If you’ve added less sugar in the first place, your jelly will simply take more time to reach that concentration, because there will be more liquids to boil off, and you’ll end up with a lesser quantity of jelly.

Some like to flavor quince jelly with vanilla, cardamom, cinnamon, or other warm spices, and I have no ideological objection to it, but I consulted with Maxence and we agreed we’d rather just enjoy the pure taste of quinces on our toast.

Because this is, naturally, the primary use we intend for the ruby lightbulbs of jelly my efforts yielded: in a few months, when it’s had time to age a bit, we’ll pop a jar open and spread some on our morning slices of pain au levain, with or without a thin insulation layer of semi-salted butter. I’m sure it will fare well on the tender flesh of a split yogurt scone, too, and I look forward to brushing the top of my apple tarts with it for shine, as is traditional.

~~~

* As Harold McGee explains on page 297 of his On Food and Cooking, the addition of lemon juice “increases the acidity, wich neutralizes the electrical charge and allows the aloof pectin chains to bond to each other into a gel.” (Don’t you love to imagine those pectin chains acting all aloof and superior?)

** “When we dissolve sugar or salt in water, the boiling point of the solution becomes higher than the boiling point of pure water. This increase in the boiling point depends predictably on the amount of material dissolved: the more dissolved molecules in the water, the higher the boiling point. So the boiling point of a solution is an indicator of the concentration of the dissolved material.” Ibid., pp. 680-681.

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Quince Jelly Recipe

Prep Time: 30 minutes

Cook Time: 35 minutes

Total Time: 1 hour, 5 minutes

Quince Jelly Recipe

Ingredients

  • ripe quinces
  • white sugar (not unrefined sugar) (950 grams or 4 3/4 cups for each liter or quart of quince juice)
  • lemon(s) (1 for each liter or quart of quince juice)

Instructions

  1. Rub the quinces with a dry cloth to remove the fuzz, then rinse and remove what's left of the blossom (the teeny leaves opposite the stem end). Using a sharp knife, quarter the fruit, check to make sure no worm lives inside, and cut into small chunks without peeling or coring.
  2. Place the fruit in a large pot, add water just to cover, place the lid on, and bring to a simmer. Cook for about 1 hour, until soft. If you have a pressure cooker, cook the fruit for 25 minutes once the target pressure is reached.
  3. Pour the fruit and juice through a fine mesh colander into a large bowl, and press the fruit gently to extract as much juice as possible. Set the fruit aside for another use (see note). Clean the colander, line it with moistened cheesecloth (or a moistened dishtowel if unavailable), and filter the juice a second time to remove all the solid particles -- this will ensure you have a nicely translucent jelly. Cover and refrigerate overnight.
  4. The next day, measure the quince juice you've obtained and pour it into the cleaned pot. For each 1 liter (1 quart) of juice, add the juice of 1 lemon and 950 grams (4 3/4 cups) sugar. (You should get 1 liter of juice from about 1.8 kilos or 4 pounds quinces.)
  5. Set the pot over medium-high heat and stir regularly until the sugar is dissolved. Bring to a boil and cook, skimming the foam that collects at the surface, until a cooking thermometer reads 103-105°C (217-221°F) -- this took about 10 minutes for me.
  6. If you don't have a thermometer, place a saucer in the freezer as the jelly cooks. To check whether the jelly is set, pour a drop of jelly onto the very cold saucer, wait a few seconds, then tilt the saucer: if the drop slides along the saucer, the jelly needs more cooking. If it stays put, it's ready.
  7. While the jelly is cooking, sterilize the jars and lids -- I submerge them in boiling water for 10 minutes, but you can also run them in the dishwasher or the oven. (See this site for comprehensive info on safe canning.)
  8. Pour the very hot jelly into the very hot jars using a small ladle. Wipe off the rims and any spillage with a clean, damp cloth. Close the jars tightly and let cool without disturbing. Label and put away in a cool, dark place until ready to eat. Give them a few months if possible; the flavor improves with time.

Notes

  • Process the cooked fruit through a food mill to get rid of the pits, skin, and woody bits. The filtered pulp can be sweetened, spiced, and eaten as a compote, or sweetened and cooked again to make quince paste (a.k.a. membrillo).
  • Adapted from Christine Ferber's Mes Confitures.

https://cnz.to/recipes/jams-nut-butters/quince-jelly-recipe/
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