Why Bother Freezing Your Own?

There is a particular kind of joy in pulling a bag of your own raspberries out of the freezer in January. Shop-bought frozen berries are fine and cheap, but they are grown for yield and shelf life, not for flavour. The fruit you picked on a warm July morning at the allotment or from the bushes down the end of the garden tastes of something else entirely — and freezing it well is the difference between a decent winter crumble and a truly memorable one.

The trick, and it is barely a trick at all, is to freeze the berries loose first and bag them up afterwards. Skip this step and you end up with a solid brick of fruit that has to be defrosted whole, which means you cannot take out a handful for a pudding without committing to the lot. Do it properly and you get a bag of individually frozen berries that rattle like marbles and can be used by the spoonful.

Pick and Prepare with a Little Care

Quality in the bag is quality in the bowl. Pick in the cool of the morning if you can, and avoid fruit that is drippingly ripe — slightly firm berries freeze far better than squashy ones. Damaged fruit should be set aside for jam or eaten straight away, as bruises turn to mush in the freezer.

• Raspberries, loganberries, tayberries and blackberries: handle as little as possible. Pick over gently, removing any leaves, and freeze whole.
• Strawberries: hull them and halve or quarter anything large. Whole strawberries freeze into unappetising bullets, so cutting them pays off.
• Blackcurrants and redcurrants: the quickest method is to run a fork down the strigs over a bowl. No need to top and tail redcurrants at all.
• Gooseberries: top and tail them, and choose whether to freeze green (for sharp, tangy puddings) or ripe (for sweeter dishes). Both are useful.
• Cherries, damsons and plums: stone them, or freeze whole if you plan to cook and sieve them later.
• Rhubarb: not a berry, but it belongs in the same routine. Chop into short lengths and freeze on the tray exactly the same way.

Washing is usually unnecessary and often harmful, as wet fruit freezes into a clump. If your fruit is dusty or has been sprayed, rinse it quickly, then dry it thoroughly on a clean tea towel before freezing.

The Tray-Freeze Method, Step by Step

This is the whole technique, and it takes about five minutes of actual work.

• Line a flat baking tray or shallow dish with baking parchment. Silicone mats work well too, but cling film gets tangled and is best avoided.
• Spread the fruit out in a single layer with a little space between the pieces. Crowding is the enemy, as berries touching each other will freeze together.
• Slide the tray into the coldest part of the freezer — usually the top shelf at the back, or a fast-freeze drawer if you have one. Aim for a freezer running at -18°C or colder.
• Leave for two to four hours, until every berry is hard and rattles when you shake the tray. Larger fruit such as plums may need longer.
• Working quickly, tip the frozen fruit into freezer bags or rigid tubs. Squeeze or press out as much air as you can, seal, and return to the freezer immediately.

Do not leave the fruit sitting on the worktop while you hunt for bags. Warm air is the only real threat to a good freeze, and a part-thawed berry will refreeze into a sad, leaking mess.

Bagging, Labelling and Keeping

Use bags in sensible portion sizes — roughly 450g is enough for a family crumble, while smaller bags of 150g to 200g suit a compote or a bowl of porridge. Flatten the bags before freezing so they stack neatly and defrost quickly.

Label everything with the fruit and the date. It sounds fussy, but by February every black bag looks identical and you will not remember whether it holds your best raspberries or a mystery glut of gooseberries. As a rough guide, most soft fruit keeps well for eight to twelve months, though delicate raspberries are at their best within six to nine. Anything that has sat in the freezer for two summers should go into jam.

If your berries are sharp — and many allotment varieties are — you can pack them with sugar instead. Toss roughly 100g of caster sugar per 500g of fruit, stir gently until the sugar starts to draw out the juice, then freeze in tubs. This makes an instant sauce, but it does limit the fruit to sweet dishes, so keeping some unsweetened is wise.

Which Fruits Freeze Best

Most soft fruit freezes beautifully, but a few earn special mention. Blackcurrants actually improve in the freezer, losing some of their harshness, which is why so many growers freeze the whole crop and make cordial in the autumn. Blackberries and hybrid berries hold their shape well. Gooseberries and rhubarb are excellent and endlessly useful. Strawberries are the weakest of the bunch; they soften noticeably and are better used in cooked puddings, smoothies or jam than served raw after defrosting.

Using Your Winter Store

Frozen berries go straight into the pan — no defrosting needed for crumbles, compotes, pies and cobblers. Add an extra five minutes of cooking and a little more thickening, as frozen fruit releases more liquid than fresh. For a proper summer pudding in December, defrost the fruit overnight in the fridge and use the juices to soak the bread.

Beyond puddings, keep a bag for stirring through yoghurt, folding into ice cream, or blitzing into a quick coulis. A handful of frozen raspberries dropped into a glass of something fizzy is one of the better arguments for a well-stocked freezer. Come the dark evenings, you will be very glad you spent that half hour in July.