Cornflour and cornstarch are the same ingredient. In Britain we call it cornflour; Americans call it cornstarch; it is a fine, bright white powder of pure starch milled from the heart of the maize kernel, and its whole job is to thicken. If a recipe from the United States asks for cornstarch, reach for your tub of cornflour and use exactly the same amount. There is no conversion to do. ...
Here is the short answer: single cream and double cream are the same stuff at different strengths, and the strength is fat. Single cream is about 18% fat, double cream about 48%, and whipping cream sits between them at roughly 35%. That single figure decides everything that matters in a kitchen: whether the cream whips, whether it splits when it hits a hot pan, and whether it is meant for pouring or for holding its shape on top of a pudding. Once you know the fat, you know what the cream will do. ...
Yes, you can freeze fresh herbs, and it is the single thing that stopped me throwing away half a bag of coriander every week. The method depends on the herb. Soft, leafy herbs like basil, parsley, coriander, dill, chives and mint freeze best chopped and locked into ice-cube trays with a little oil or water, or blitzed into a paste. Woody herbs like rosemary, thyme, sage, oregano and bay freeze well left whole on the stem in a bag. Either way you use them straight from frozen, in cooked food rather than as a fresh garnish, because freezing softens them. ...
An opened pack of sliced ham keeps three to five days in the fridge, and never a day past its use-by date, whichever comes first. A ham or gammon joint you have cooked at home is a leftover like any other, so cool it fast and eat it within a couple of days to be safe. An unopened shop pack goes by the use-by date printed on it, nothing more. That is the short version. The longer version matters, because ham is one of those things that sits at the back of the fridge looking fine long after it has stopped being fine, and cold does not fix a meat that has turned. ...
Yes, you can freeze cooked pasta, and it is one of those quiet time-savers I wish I had started doing years ago. Cook a big pan once, freeze it in portions, and a hot bowl of pasta is three minutes away on a night when I have nothing left to give. The results are genuinely good too, better than most people expect, as long as you undercook it a touch and cool it fast. Here is how I do it, and where the pitfalls are. ...
Yes, you can freeze cooked chicken, and in my kitchen it is one of the jobs the freezer does best. A roast on Sunday, the last of a poached breast, the chicken picked off a carcass before I make stock: all of it freezes well and comes back as a quick lunch or the start of a curry. The freezing part is easy. What matters is the hour after cooking and the way you bring it back to life, because the cold preserves chicken, it does not clean it up. ...
You are halfway through a recipe, you crack the fridge open, and there are no eggs. Or someone at the table cannot eat them and the recipe calls for two. Before you write the bake off, know this: for most cakes, muffins, brownies and biscuits you can swap the eggs out and still get a good result. The catch is that there is no single magic replacement, because an egg is not doing one job in a recipe, it is doing two or three at once. Once you know which job matters in the bake in front of you, picking the right swap is easy. Here is what actually works, measured per egg, and how to choose. ...
Yes, you can freeze onions, and unlike a lot of vegetables they do not need blanching first. Peel them, chop or slice them, and they go straight into the freezer raw. They keep for months, they cost you almost nothing, and there is no more crying over the chopping board every single time a recipe starts with “first, dice an onion”. The one thing to be clear about from the start: frozen onions come back soft and a bit watery, so they are for cooking, not for a salad or a burger. Get that straight and freezing onions becomes one of the most useful habits in a busy kitchen. ...
Yes, you can freeze yoghurt, it is perfectly safe, and freezing does not kill the live cultures. The one thing to know before you start is that freezing changes the texture. Yoghurt is an emulsion of water, fat and protein, and freezing splits it, so what you thaw out is grainy and watery rather than smooth and glossy. That does not make it bad, it just makes it the wrong thing to eat straight from a pot with a spoon. Where frozen yoghurt shines is in smoothies, baking, cooking and cold treats, and if you have ever stood over a tub that is a day off its date wondering whether to bin it, freezing is the answer. Here is how I do it. ...
Yes, you can freeze potatoes, but not the way most people first try it. Peel a few spuds, cut them up, tip them straight into a freezer bag raw, and you will be disappointed. They come out grainy, watery, a bit grey and faintly sweet, which is not what anyone wants under a Sunday roast. The trick is that potatoes need to be cooked or at least part-cooked before they go anywhere near the freezer. Do that, and they freeze beautifully, whether it is mash, roasties, chips or diced potato for a hash. Below is how I handle each one, how long they keep, and the one rule that stops the whole lot going to waste. ...