Outdoor picnics and parties are very popular in America in the summertime. Visit any park between Memorial Day (end of May) and Labor Day (beginning of September) and you'll find families and groups of friends enjoying the warm weather and sharing a meal. Birthday celebrations, family reunions, sporting events and holidays are all common reasons to host a get-together. But just wanting to be outside on a nice summer day is the best reason! Food is an important part of any gathering, and in the summer Americans love to cook outside on grills . All kinds of meats, such as hamburgers, hot dogs, chicken and sausages, and even vegetables like corn, peppers or potatoes can be cooked on the grill. Many typical families have grills in their yards, and many parks also have grills for public use. Men seem to particularly like to do the job of barbecuing the food, even if they don't usually cook at any other time. Many have "secret recipes" for a delicious barbecue sauce . Other guests at the party will often be asked to " bring a dish to share". This means that they will make some kind of side dish (a salad or vegetable) or dessert, and share it with the others. If you make something very delicious, people may want you to make it every time! Fried chicken and sandwiches are popular at picnics too, because you eat them with your hands. Potato salads and baked beans are favorite side dishes. According to the passage, Americans hold outdoor activities in   _  .
January April June October