How Does It Work?
- Fruit: A good rule of thumb: If you can easily mash a fruit when raw, it will work well in no-cook jam. (Frozen fruit contains too much water, which can prevent setting, so fresh is better.) Think strawberries, raspberries, blueberries, blackcurrants and mango. Tomatoes and stone fruits, such as peaches and apricots, need to be peeled and pitted first. Because these jams aren’t cooked, you’ll get the best results with fruit that is ripe and sweet.When mashing, make sure any chunks are small enough for easy spreading. Jams made from berries with skins, like blueberries, turn out even better if the fruit goes into a food processor or under an immersion blender for a few seconds — it will break up their thick coverings more easily than a potato masher. Press the mashed fruit through a fine-mesh sieve to remove any seeds, if desired; this is a must if you like your raspberry, blackberry or currant jam on the smooth side.
- Sugar: Most no-cook jams use granulated sugar (here at Sobeys, we just call that “sugar” in our recipes), which acts as a preservative. Reducing the amount will change the consistency of the jam and shorten its shelf life, so stick to the measure called for in the recipe. You can change up the sweetener a bit, if you like. Honey is an obvious substitution, but if you’re vegan, try maple syrup, agave syrup or coconut sugar. It may take a little experimentation to figure out the proportions, but it’s delicious work! Tip: You can create no-cook jams with artificial sweeteners instead of sugar, but make sure to buy sugar-free freezer jam pectin, which is designed to work with them.
- Pectin: Pectin is a natural substance found in many fruits that helps jams set and creates their thick, spreadable texture. Most of the fruits used to make jam are low in pectin, so it needs to be added. Freezer jam pectin — sold in powder form — is made specifically for no-cook jams; you can also use liquid pectin, as we have in our recipes. It’s important to follow the package directions to the letter and whisk vigorously to keep lumps at bay. Even with added pectin, some no-cook jams will have a thinner consistency than cooked ones because heat hasn’t evaporated the natural moisture in the fruit. (Not our No-Cook Tangy Blueberry Freezer Jam, though — it has the perfect jammy thickness.)
- Flavourings: You can easily customize your no-cook jams. Try adding citrus zest and juice (blueberries with lemon are especially nice). Fresh herbs will retain their bold flavour because they are not cooked in these jams, so try combinations like basil with peaches, strawberry with lavender or cilantro with tomato. Make a riff on our No-Cook Raspberry, Coconut & Cardamom Jam by changing up the ground sweet spices, or adding rosewater or vanilla extract. Even a little alcohol, such as rum or whisky, can be stirred into no-cook jams — just a small spoonful, though, as too much can affect setting.
Storage: Keep no-cook jams for up to three weeks in the refrigerator and up to six months in the freezer.
Pro Dos and Don’ts
- Don’t use blemished fruit because it can contain bacteria that will spoil the jam.
- Do make sure fruit is mashed evenly, with no large chunks remaining.
- Do stir the mixture until the sugar is completely dissolved for the best flavour and texture.
- Do put a dated label on the container. If your jam is going straight into the fridge, eat it up within three weeks of that date. If it’s going into the freezer, store it for up to six months. Once you thaw and open the container, keep it in the fridge and use it up within three weeks.