Salad dressing
It’s a no-brainer that creamy dressings contain dairy, but even bottled vinaigrettes may be suspect, says Hamshaw. Scan the ingredients list to make sure there’s no Parmesan or Romano cheese sprinkled in there.
Chicken broth
All you bone-broth aficionados, take heed: Chicken broth and bouillon can contain milk solids, says Hamshaw. That means anything you use them for will contain trace amounts of dairy, including chicken soup.
Pesto
With its strong focus on basil, many people are often surprised that this rich green spread contains dairy. “While it can be made without cheese, traditional pesto uses Parmesan,” says Stefanski. That makes it a no-no for vegans and those with milk allergies, but if you are lactose intolerant, you may be in luck. “Hard cheeses are virtually free of lactose so this may not cause digestive problems,” she says.