How to make delicious jam

There’s something deeply satisfying about spooning homemade jam onto a warm scone or toast in the morning – even more so when you’ve picked the fruit yourself. We’ve got all the kit you need to make something delicious!

Jam-making is all about timing. To get the best flavour and natural sweetness, fruit needs to be picked when it’s just ripe – not under or over. Visit pick-your-own (PYO) farms or forage responsibly in hedgerows, keeping local wildlife and landowners in mind. Or you might even want to start growing our own fruit (we’ve got a great selection at the Garden Centre).

To kick off, here’s a rough guide to UK fruit picking seasons:

Strawberries – June-July

Raspberries – June-August

Gooseberries – late June-July

Blackcurrants & redcurrants – July

Plums – August-September

Blackberries – August-September

Damsons – September

While most fruits can be turned into jam, some are naturally higher in pectin – the setting agent that gives jam its jelly-like consistency. Others (like strawberries) are low in pectin and need a little help.

Top fruits for jam-making:

  • Strawberries – classic and sweet, but low in pectin
  • Raspberries – vibrant flavour, slightly better pectin content
  • Blackberries – excellent for wild foraging, especially from August
  • Blackcurrants & redcurrants – naturally high in pectin, great for mixing
  • Gooseberries – tart and high in pectin
  • Plums & Damsons – rich flavour, perfect for late-summer preserves

Pro Tip! For low-pectin fruits (like strawberries), use jam sugar (which includes pectin) or add a splash of lemon juice to help the jam set.

What kit do I need?

You don’t need a full-blown industrial kitchen – just a few basics. It won’t surprise you to learn that we have it all at the Cook & Gift Shop!

  1. Large heavy-bottomed pan – Prevents burning and allows even heating
  2. Jam thermometer – Reaching the setting point (105°C / 220°F) is key
  3. Sterilised jars with lids – Kilner jars or recycled jam jars work well
  4. Ladle or jug – For pouring jam into jars
  5. Funnel – Makes jar-filling tidy and mess-free
  6. Wooden spoon – For stirring and testing consistency
  7. Wax discs & labels – For a professional finish

So, you have your fruit and you’ve got your kit. Now all you need is a recipe. Here’s our easy strawberry jam one. Enjoy!

Traditional Strawberry Jam Recipe

Ingredients:

  • 1 kg fresh strawberries (hulled)
  • 1 kg jam sugar (this is granulated sugar with added pectin)
  • Juice of 1 lemon (optional, but helps enhance flavour and set)

Instructions:

  1. Prep the fruit – Hull and halve large strawberries. Leave smaller ones whole if you like a chunkier texture.
  2. Combine ingredients – Place the strawberries, jam sugar, and lemon juice into a large non-reactive saucepan.
  3. Gently heat – Warm over low heat, stirring until all the sugar has dissolved. Don’t rush this part—undissolved sugar can cause crystallisation later.
  4. Bring to a rapid boil – Once the sugar is fully dissolved, bring the mixture to a rolling boil. Boil hard for 4–5 minutes only (jam sugar sets quicker due to the pectin).
  5. Test for setting point
    • Use the wrinkle test: Drop a little jam on a cold plate from the freezer. After 30 seconds, push it—if it wrinkles, it’s ready.
    • Or use a sugar thermometer and check for 105°C / 220°F.
  6. Skim and cool – Skim off any foam if needed. Let jam cool for 5–10 minutes to stop fruit from floating in the jars.
  7. Jar up – Pour into warm sterilised jars, seal tightly, and label once cool.

Storage:

  • Store in a cool, dark place.
  • Keeps up to 12 months unopened.
  • Refrigerate after opening and use within 6 weeks.


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