Is it better to cook a roast on high or low?

Online Answer
Turn the heat down, way down, and cook it for a long time. Roasting beef at 225 degrees, about 100 degrees lower than most recipes call for, produces a much better roast than one cooked at higher temperatures. Of course, roasting beef at a low temperature isn't a secret to everyone.
Related Questions 📌
Yes it works. Parboil then place in ziplock bag in fridge. I've parboiled potatoes and parsnips the day before, then put them in a dish ready for roasting and put in fridge overnight.
Roasting involves cooking foods, like meat, potatoes, chicken, and vegetables, that already have a solid structure before you begin cooking. Baking, however, refers to foods without initial structure, like cupcakes and cookies.
Wire cooling rack: If your pan is big enough, a wire cooling rack — the kind used to cool cookies — can serve double duty as a roasting rack. Toaster oven racks and metal microwave racks can also work for smaller pans.
Coconut oil provides richness, fattiness, depth, and lends flavor to otherwise plain Jane dish of roasted vegetables.
On a work surface, place the chicken breast-side down with the neck of the chicken facing you. Using kitchen shears, cut along the length of the backbone on both sides and remove. Turn the chicken over, breast-side up. Open it on the counter and flatten the chicken as much as you can with your hands..