How to Use a Kilner Berry Fruit Preserve Jar for Jam
By Kilner® - Iconic Glass Jars, Bottles & Equipment | Kilner® | Published: 2026-10-29
Category: How-to Guides
Learn step-by-step how to make and store small batch jam in the Kilner Berry Fruit Preserve Jar, with practical tips for sealing, filling, and checking your preserve.
Quick Answer
Use the Kilner Berry Fruit Preserve Jar for small batch jam by following a simple hot-fill method: prepare your jam, fill the jar while hot, seal immediately, and check the vacuum seal as it cools.
Why the Berry Jar Suits Small Batches
The Kilner Berry Fruit Preserve Jar holds 0.4 litres, which is ideal for small batch jam making when you want to test a recipe or give a gift. Its unique berry-inspired design adds a charming touch to your kitchen shelf or pantry.
Because the jar is multi-functional, you can use it not only for jam but also for storing dried fruits, honey, or homemade sauces. This versatility makes it a practical addition to your preserving equipment.
Trade-Offs to Consider
The 0.4 litre capacity means you'll need multiple jars if you make a large batch of jam. Plan your recipe quantities accordingly to avoid having leftover jam without a jar.
The novelty shape may be slightly more challenging to clean thoroughly compared to standard straight-sided jars. Use a bottle brush to reach all corners and ensure proper hygiene before each use.
Step-by-Step Guide to Making Jam in Your Kilner Berry Jar
- Sterilize the jar: Wash the Kilner Berry Fruit Preserve Jar and its lid in hot, soapy water. Rinse well, then place in a preheated oven at 140°C (275°F) for 15 minutes, or use a dishwasher cycle. Keep the jar hot until filling. Never touch the inside of the sterilized jar with your fingers – use clean tongs.
- Prepare your jam: Cook your fruit and sugar mixture according to your recipe until it reaches setting point (about 105°C/220°F). Skim off any foam from the surface. Check the setting point with a chilled saucer – if a wrinkle forms when pushed, the jam is ready.
- Fill the jar while hot: Carefully pour or ladle the hot jam into the warm jar, leaving about 1 cm (½ inch) headspace. Wipe the rim with a clean, damp cloth to ensure a good seal. Do not overfill – leaving headspace is essential for the vacuum seal to form.
- Seal immediately: Place the lid on the jar and screw it on tightly. Invert the jar for 5 minutes, then turn it upright. This helps create a vacuum seal as the jam cools. If the lid pops when pressed after cooling, the seal has not formed – refrigerate and use within a few weeks.
- Cool and store: Allow the jar to cool completely at room temperature. Check the seal by pressing the center of the lid – it should not move. Label with the date and store in a cool, dark place. Once opened, keep the jam refrigerated and consume within 4-6 weeks.
Product Facts
- Kilner® Berry Fruit Preserve Jar 0.4 Litre: The Berry Fruit Preserve Jar is a unique, novelty design from Kilner® inspired by raspberries and blackberries. Its charming design makes it perfect for gifting or adding a decorative touch to your kitchen, while still being fully functional for preserving.
Kilner® Berry Fruit Preserve Jar 0.4 Litre
