Mold and germs will be killed by the vinegar.

How to freeze blackberries. Blackberries need to be handled very gently, if you end up bruising all the berries before you freeze them you might not like the results. To make a fruity liqueur, mash blackberries lightly with sugar, push through a sieve, pour into a clean bottle then top up with your spirit of choice. You must freeze blackberries individually, so once dry, spread them out in a single layer on a baking tray and freeze for a few hours.

Here’s how it is done. Place a layer of prepared blackberries on the bottom of a plastic freezer container and sprinkle some sugar on top. ***no need to wash the blackberries first, you can rinse them just before you use them with cool.

Leave them to air dry on a towel on a flat surface and spread out well. First, fill with water the equipment of your choice and add vinegar to up your sterilization game. Chill the syrup while you pack berries into.

Cut up your blackberries into pieces and add in sugar, lemon juice, and lemon zest. Place the tray into the freezer for a few hours until the blackberries are frozen on the outside. Spread the cleaned blackberries out in a single layer on the paper.

Remove any damaged or rotting berries from the bunch. Rinse your blackberries in a colander and set aside to drain and air dry a bit. Pop in the freezer flat.

Rinse the berries and remove any stems or leaves. You start by dissolving equal parts sugar and water to create a sugar syrup. Pour the blackberries out onto a baking sheet.