How to Use the Kilner® Smoothie Making Set: Step-by-Step Blending and Storage Tips

Quick answer

Load soft ingredients first, add liquid to about two-thirds of the jar, and blend in short pulses to avoid overworking the motor. Drink straight away or seal in a clean Kilner® glass jar and refrigerate for up to 24 hours. If your set includes a juicer or mill attachment, strain the blended mix before storing.

A smoothie is only as good as the way you blend and store it. The Kilner® Smoothie Making Set gives you a glass blending jar and accessories that move straight from blender to fridge, so you are not juggling plastic cups or hunting for a lid that fits. The steps below cover the full process: preparing fruit, loading the jar, blending, and storing what you do not drink right away.

If you already own a Kilner® Clip Top jar or a shaker-lid storage jar, you can use the same principles. The goal is a smooth texture, no leaks, and a drink that still tastes fresh the next morning. Work through the steps in order, and check the common mistake flagged with each one.

Before you start: prep that prevents most problems

Cut fruit into chunks no larger than a walnut. Frozen banana and frozen berries blend more smoothly than ice cubes, and they chill the drink without watering it down. If you are using leafy greens, remove thick stems first; they wrap around blades and leave stringy bits in the finished smoothie. Have your liquid ready before you load the jar so you are not searching the fridge mid-blend.

Check that the blade assembly and seal are clean and seated correctly. A seal that is twisted or missing is the most common cause of leaks, and it is much easier to spot before you add liquid than after. If your set includes a juicer or mill attachment, keep it within reach so you can strain the blend without moving the jar.

• Common mistake: adding ice first. Ice sits on top of the blades and stalls the motor; use frozen fruit instead.
• Checkpoint: everything is chopped, the seal is seated, and the lid locks before you press start.

Load the jar in the right order

Put soft ingredients in first: yogurt, nut butter, soft fruit, and leafy greens. They sit closest to the blades and pull the harder pieces down as they blend. Add harder items like frozen fruit, apple chunks, and ice next. Pour liquid in last, aiming for about two-thirds of the jar's capacity; this gives the blades room to create a vortex rather than a paste.

Do not fill past the maximum line. Overfilling is the second most common cause of leaks after a bad seal, and it also forces the motor to work harder than it needs to. If you want a thicker smoothie, start with less liquid and add more in small splashes while blending.

• Common mistake: packing the jar to the top because it looks like it will fit. Leave headroom.
• Checkpoint: liquid covers the blades but the jar is not more than about three-quarters full.

Blend in short pulses, then finish smooth

Start with three or four short pulses to break up the fruit, then run the blender continuously for 30 to 45 seconds. Pulsing first stops the blades from cavitating, which is what happens when a pocket of air forms around them and the motor spins without actually cutting anything. If the mixture stops moving, switch off, remove the jar, and shake it or use a spatula to push the ingredients down.

For a smoother result, blend a little longer rather than faster. Most glass jar blenders reach a silky texture in under a minute; running them for several minutes adds heat and can make the drink taste flat. If your set has a strainer or mill attachment, pour the blend through it now to remove seeds and pulp.

• Common mistake: blending on the highest speed from the start. Begin low and increase.
• Checkpoint: the smoothie moves freely in a visible vortex and no chunks are stuck to the sides.

Store leftovers so they still taste fresh tomorrow

Pour what you do not drink into a clean Kilner® glass jar and seal it immediately. Glass does not hold onto flavours the way plastic does, so a jar that held garlicky dressing last week will not taint today's berry smoothie. Fill the jar close to the top to limit the air gap, which slows oxidation and keeps the colour brighter. Refrigerate straight away and drink within 24 hours for the best flavour and texture.

Expect some natural separation. Fibre and water split as the smoothie sits, and that is normal, not a sign it has gone off. Shake the jar before drinking. If you added yogurt or nut butter, the texture will thicken overnight; a quick shake usually brings it back. Smoothies with fresh juice and no dairy tend to separate faster than creamy blends.

• Common mistake: storing in an open cup or a jar with a loose lid. Seal it properly.
• Checkpoint: the jar is filled near the top, sealed, and in the fridge within 10 minutes of blending.

Clean the set so it is ready for tomorrow

Rinse the jar, lid, and blade assembly with warm water as soon as you finish. Dried fruit pulp is much harder to remove than fresh, and it can lodge under the seal where you cannot see it. Wash glass parts in warm soapy water or on a normal dishwasher cycle if the manufacturer allows it; check the care instructions that came with your set for the blade and any plastic components.

Leave the jar and lid to air dry fully before reassembling. Trapping moisture under the seal encourages odours and can shorten the life of rubber gaskets. If your set includes a strainer or mill attachment, rinse it separately so pulp does not dry in the mesh.

• Common mistake: leaving the blade assembly to soak overnight with the seal still attached.
• Checkpoint: all parts are dry, the seal is back in place, and the jar is reassembled and ready.

Your smoothie workflow, step by step

1. Prep the fruit and check the seal: Chop fruit to walnut-sized chunks, remove thick stems from greens, and confirm the blade seal is seated correctly before you load anything. Checkpoint: no leaks and no oversized pieces that will stall the blades.
2. Layer soft, then hard, then liquid: Soft ingredients go in first, frozen fruit and ice next, and liquid last, filling to about two-thirds of the jar. Checkpoint: leave headroom; never fill past the maximum line.
3. Pulse, then blend smooth: Three or four short pulses break up the fruit, then blend continuously for 30 to 45 seconds until the mixture moves in a visible vortex. Checkpoint: no chunks stuck to the sides and no air pocket around the blades.
4. Strain if you want a finer texture: If your set includes a mill or strainer attachment, pour the blend through it to remove seeds and pulp before serving or storing. Checkpoint: the texture suits your preference before you commit the batch to storage.
5. Seal and refrigerate leftovers: Pour into a clean Kilner® glass jar, fill close to the top, seal, and refrigerate within 10 minutes. Drink within 24 hours. Checkpoint: shake before drinking; separation is normal.
6. Rinse and dry the whole set: Wash the jar, lid, blade assembly, and any attachments in warm soapy water, then air dry fully before reassembling. Checkpoint: dry seal, dry jar, ready for the next batch.

Kilner® products that pair with smoothie making

• Kilner® Storage Jar with Shaker Lid 0.25 Litre: The Kilner Storage Jar With Shaker Lid is perfect for storing and displaying dried foods, such as chocolate sprinkles, parmesan cheese, herbs and spices. Use it for dry smoothie boosters like cocoa nibs, cinnamon, or chia seeds so you can add them without opening a full-size jar.
• Kilner Sauce Mill Jar Set: Create homemade sauces and purees with the Kilner® 1 Litre Sauce Press Set. This set includes a glass jar and a sauce mill attachment, designed for easy pressing and straining of fruits, vegetables, and more. 1 Litre capacity glass jar for preparing and storing your sauces. Includes a sauce mill attachment for pressing and pureeing ingredients. Ideal for making smooth sauces, purees, and baby food at home. If you want a smoother texture than blending alone gives, press the fruit through the mill first, then blend the puree with your liquid.
• Kilner® Glass Drinks Dispenser with Tap Gift Box - 3 Litre: The Kilner® 3 Litre Storage Jar with Dispensing Tap is perfect for serving and infusing various types of beverages and is ideal for home hosting and parties. For a smoothie bar at a party, blend a large batch and let guests pour their own from the tap instead of refilling glasses from the blender.

A good smoothie is mostly about order and timing: soft ingredients first, liquid last, short pulses rather than long blasts, and a sealed glass jar in the fridge within minutes. Follow those steps and the Kilner® Smoothie Making Set will earn its place on the counter rather than in the cupboard.