What's often called stomach flu is gastroenteritis, an infection of the stomach and intestines. The flu, or influenza, is different. It causes fevers, sore throats, runny noses, and general aches and pains. It usually does not cause stomach problems.Viral infections are the usual cause of gastroenteritis.hat's often called stomach flu is gastroenteritis, an infection of the stomach and intestines. The flu, or influenza, is different. It causes fevers, sore throats, runny noses, and general aches and pains. It usually does not cause stomach problems. Viral infections are the usual cause of gastroenteritis.
So there you have it: thereâs no magic technique for ripening avocados overnight â unfortunately - but the paper bag trick does speed the process. So your guacamole cravings will have to wait a full 2 days if you have a paper bag handy or 3 if you donât. The best strategy is to keep some handy.
Tips to know: 1  Choose avocados that are slightly soft to the touch, heavy for their size, and do not have dark, dimpled spots. They must also be free from bruises. 2  If you purchase an unripe avocado, store it in a brown paper bag at room temperature. It will ripen in two to three days. A Hass avocado will turn black when ripe, but a lot of the Florida and non-Hass varieties will remain green. Avocado can be used in place of butter in many recipes.