The best type of thermometer â or the best place to insert the thermometer, in some cases â depends on your child's age. Birth to 3 months. Use a regular digital thermometer to take a rectal temperature. New research suggests that a temporal artery thermometer might also provide accurate readings in newborns. 3 months to 4 years.
Instead of using flour and butter, we just use corn flour (corn-starch in North America and maizena in most of Europe and the rest of the world). All we do is whisk the corn flour into COLD milk. Heat slowly, whisking all the while.Simmer very slowly for 5 minutes.nstead of using flour and butter, we just use corn flour (corn-starch in North America and maizena in most of Europe and the rest of the world). All we do is whisk the corn flour into COLD milk. Heat slowly, whisking all the while.
Corn doesn't contain gluten, so you can substitute cornstarch in sauces and soups that use flour as a thickener. But there are a few things to remember: 1  Cornstarch is a more powerful thickener than flour, so you'll need less. 2  Start with half as much cornstarch for the flour listed in the recipe.orn doesn't contain gluten, so you can substitute cornstarch in sauces and soups that use flour as a thickener. But there are a few things to remember: 1  Cornstarch is a more powerful thickener than flour, so you'll need less. 2  Start with half as much cornstarch for the flour listed in the recipe.