TASK DEFINITION: Given the background description of some cooking related query, summarize the question into a title
PROBLEM: I am assembling a recipe for a glazed fruit pie, refrigerated and not cooked. The glaze will be made from a starch which will be boiled with water and sugar, poured over berries in a jelly roll pan and refrigerated to soft set. They'll then be placed into a cookie crumb crust and put back in the fridge to finish setting. It's all fairly simple.However most of the recipes I have found call for cornstarch. The store-bought glaze mixes I've found include tapioca starch (along with citric acid, salt, and some natural flavors/coloring). I have both tapioca starch and cornstarch on hand, as well as potato starch. Is there a benefit of any one over the others? For instance, I have read that cornstarch can impart a significant cornstarch flavor. Also, cornstarch will often result in a cloudier appearance when set. The goal here is a completely transparent appearance so one could barely tell that there was anything beyond fruit present. Any advice would be appreciated, thanks!

SOLUTION: Creating a recipe for a glazed fruit pie - what starch to use?

PROBLEM: In Masterchef The Professionals (season 8 episode 11), Marcus Wareing demonstrates his skills test and cooks a burger. In the process, he rapidly cools the onions after sweating them by placing them on a freezing tray. Would it make a noticeable difference to skip that step? I never did this and my burgers did not fall apart as he suggests. Is there some other reason for doing this?You can see the episode here (skip to 17:30).

SOLUTION: Cooling cooked onions before adding to raw mince

PROBLEM: I've had a Lodge cast iron skillet for about a year. A few months after I bought it I seasoned it with too much oil (I learnt later) and the surface developed some 'bubbles' that later started flaking. I've used it almost every day and while it is fairly non stick (I can fry eggs in it) I never managed to get a smooth surface on it. Here's a photo of how the surface looks . While the surface might look like it's flaking, I do not see flakes in the food or when I'm cleaning it. Do you suggest I sand it and reseason it, or will the surface eventually smoothen out if I just keep using it?

SOLUTION:
Getting a cast iron skillet surface smooth