If you feel like your six-year-old has suddenly gotten extra fussy about the texture of their dinner, don’t worry. It will pass. A new study from the University of Copenhagen’s Department of Food Science demonstrates that at the age of six, children prefer to avoid crunch in their peanut butter, berries in jam and pieces of fruit in yogurt, In the study, the researchers asked 485 children between the ages of five and twelve to choose between six different foods with and without lumps, seeds and pieces of fruit in…