This is a physical test. A chemical test for starch is to add iodine solution (red) and see if it turns blue/black in colour. It is possible to distinguish starch from other carbohydrates using this iodine solution test.For example, if iodine is added to an peeled potato then it will turn black.his is a physical test. A chemical test for starch is to add iodine solution (red) and see if it turns blue/black in colour. It is possible to distinguish starch from other carbohydrates using this iodine solution test.
Moving to French cuisine, one of my favourite ways of using up stale bread is in a simple Gascon soup, Garbure, made with layers of bread and cabbage, flavoured with ham, beans and vegetables. Cookery writer Kate Hill's recipe is gorgeous.
Bread is traditionally made with flour, water, yeast, sugar and some type of fat. Other ingredients often used in home baked bread are milk, eggs and butter. You will need to ask about most home baked breads. One of my favorite home baked breads is frequently vegan, sourdough potato bread. Some good stuff! Store bought breads, pre-sliced in plastic bags, are a different story.