There are more specific tips to help you overcome the cold, too:
Drink all the liquids you can, and maybe you can justify a frozen dessert
Avoid coffee, soda, and alcohol, which dehydrate the body (sorry). Opt for water, juice, and decaffeinated tea, which keep you hydrated and help loosen up any congestion issues. That's also why chicken broth-based soup is a standard.
Take it easy when it comes to milk, though. Dairy can make your phlegm thick, and might actually irritate; on the other hand, cold treats can be soothing, like a tasty little ice pack for your throat, so maybe opt for a sorbet or vegan ice cream. For once, you can justify the calories, because you're probably not eating enough when you're sick. Gargling saltwater -- 1/4 to 1/2tsp of salt dissolved in 8oz of warm water -- will do the trick for a sore throat, too. (But it’s not nearly as tasty.)