You should not add raisins to recipes dry

Bouquet garni

Used very frequently in French cuisine, a secret of French chefs, it adds flavour to a lot of recipes, and it's easy to prepare. The basic principle is to make a small bundle of herbs, bind them in green leek leaves and to tie it up, so that the whole thing can be removed and discarded easily after cooking.

Plum and hazelnut crumble

Plums and hazelnuts always go really well together, as you'll find in this late-summer crumble.

Clarified butter

This is a way of melting butter to eliminate all the impurities. The clarified butter can then be heated without spoiling, and is more digestible. It is ideal for cooking at high temperatures where small black specks would spoil the appearance, or for emulsified sauces like béarnaise or mousseline.

How to glaze a tart

Professional pastrycooks usually say that "a beautiful cake is already half sold", it is one of the reasons why they do not put a tart on sale without glazing it ("abricoter" in Fench), i.e. coating it with a thick apricot syrup. This glaze gives a glossy finish to the tart (see the photographs below) and also protects it from the air and thus from oxidation and browning. It's a quite simple technique that you can easily apply to give to your desserts a professional look. This is how you do it.

You should not beat egg yolks at high speed to start with

You should not start beating egg yolks and caster sugar at high speed, because this splashes drops of egg yolk against the sides of the bowl, which then go hard as they dry.