This is a question I've been wondering about for a while as a home baker and amateur food scientist. Why do recipes for whipped, fluffy desert components like whipped cream or buttercream icing always seem to call for powdered sugar? If I want to add sugar to a something, why would I also want to add the anti-caking agent (usually starch I think) for powdered sugar as well? Is that starch actually something beneficial for a whipped desert? Because as far as I can tell, the only time powdered sugar makes sense is when it's dusted on top of something or incorporated into a desert that is being mixed by hand and doesn't have the shear of a mixer to dissolve or emulsify the granulated sugar. And I've never had any issues just using regular granulated sugar and honestly prefer it to powdered sugar for icings, whipped cream and the like. If a recipe calls for powdered sugar, but it's being combined with a mixer or beaters I just use regular sugar and the results are great.

Anyone have any thoughts or experience as to what I'm overlooking? Or is it just a hold over from a time when electric mixers weren't common and you needed a finer sugar to incorporate the sugar by hand?

There are many tips or techniques that are strongly recommended for cooking, but it's hard to know which are evidence based and which are just passed along because that's what people always do.

Which are the tips that need more evidence?

Here are two that I struggle with, about stainless steel pans:

1. Water drop test / leidenfrost

People say that if you get your pan hot enough to get the leidenfrost effect and then add the oil you'll have less problems with sticking. My problem with this is that it means the pan gets very very hot - much hotter than it needs to be for most uses. My other problem is they all say "Look, I'll cook eggs and they won't stick" and those videos either have a ton of cuts, or the eggs stick and you can see the person pushing with a spatula to get rid of the stick, or their "scrambled eggs" is really a chopped omelette.

2. Heat the pan before adding oil. I don't understand this. Again, people say it helps prevent sticking, but they use some argument about "pores" which just feels hokey. I add cold oil to a cold pan and bring it up to temperature before adding food so the pan and oil are both at the right temperature, and food sticks and then releases, because that's how stainless pans work.

I'm aware I could be completely wrong here and that there may be a good evidence base for these, but they don't seem to work based on how I cook.

Here's a list of cookery books that are frequently recommended in various forums when people ask for good cookery books.

These are not in any kind of order. Please add any books that I've missed! I'm sure there are lots of great books that I haven't heard of. I wanted to link to a bookshop, but I got stuck with that so I used Wordery, unless they didn't have it in which case I link to Amazon. Some of these books have hardback and soft-cover versions, or newer editions, so go careful with the links because I just link to any version of the book. I have done no research at all into the authors or illustrators here, so if I've included people who are toxic arseholes please do let me know and I'll fix it. (This post is episode 2 of "DanBC goes down a rabbit hole and dumps the results onto Tildes").

Salt, Fat, Acid, Heat: Mastering the Elements of Good Cooking - Samin Nosrat and Wendy MacNaughton.

A review from Kitchn: 8 cooks on why "Salt, Fat, Acid, Heat" is such a special, unlikely, hit

A lot of people love this book. Beginners say it gave them a bit more confidence, and good home cooks say it helped elevate their cooking by giving them usable information.

How to Cook Everything - Mark Bittman.

A review from Kitchn

How to Cook Everything - the basics - Mark Bittman. A review from ShelfAwareness.

A lot of people don't know how to cook, and have never cooked anything. Mark Bittman's books are often recommended to this group of people. And the books are excellent sources of information, and so they're useful to lots of people. They're very clear and easy to use.

Essentials of Classic Italian Cooking - Marcella Hazan.

A VERY SHORT, almost bullet point, review from FiveBooks And a longer review from LitHub

She wrote two books in the 1970s, and these were combined and updated in the 1990s for this book. These books are widely credited as introducing people outside Italy to "authentic" Italian cooking. LitHub review has already said everything that I'd want to say about this, but better than I could.

On Food and Cooking: The science and lore of the kitchen - Harold McGee.

A Kitchn review

This is a heavy duty book about the science of food. It's often described as the best single reference book for the science of food and cooking.

Food Lab: Better home cooking through science - J. Kenji López-Alt.

A review from Chemistry World

Surely everyone knows J. Kenji. He's really approachable. He give you science, but it's actionable and achievable.

In Bibi's Kitchen: The Recipes and Stories of Grandmothers from the Eight African Countries that Touch the Indian Ocean - Hawa Hassan, Julia Turshen.

A mini-review from Kitchn. So, I'm cheating here because I haven't seen this recommended by anyone but I wanted more books that are not Euro-US focussed. This book focuses on food from Eritrea, Somalia, Kenya, Tanzania, Mozambique, South Africa, Madagascar, and Comoros

Each chapter starts with a short geo-political intro. You'll be familiar if you've ever read the CIA World Factbook. It then has a short interview with a grandmother, and then it gives some recipes.

Sauces: Classical and Contemporary Sauce Making - Wordery link - James Peterson.

A review from MostlyFood

"Don’t be put off by the size of this book. It’s true that it’s as big as a small piece of furniture but it’s as big as that for a good reason. There isn’t any padding in Sauces. It’s cover-to-cover solid information that will be welcomed by anyone wanting to perfect sauce-making. Nothing seems to be omitted or overlooked. Every imaginable sauce is described, including Asian Sauces which have been added since the publication of the first edition."

Lots of people like that "no padding" feature.

How to Eat: The pleasures and principles of good food - Nigella Lawson.

A review by Food 52

"Thinking back on the lifespan of this formative book, I can’t help but feel that it’s to the recipes in it, and of course to Lawson herself, that I owe much of my confidence in the kitchen today."

Lots of people just want to cook tasty food and they're not bothered by The Science. Lawson's books are excellent if you want great home cooking.

The Professional Chef - The Culinary Institute of America

There are lots of versions of this book. The current version will be expensive. The older version are usually very similar and will be much cheaper.

Home cooks often get into weird habits and that's fine - it's your kitchen, do what works for you. But if you want to get better in the kitchen by improving your techniques and skills this is the book for you.