A milkshake is a sweet, cold drink made by blending ice cream with milk or other flavorings such as fruit syrups. It can also contain whipped cream and other ingredients like crushed nuts or chocolate chips. The consistency of the shake varies depending on how much ice cream is used, but it's usually thick and smooth with a rich flavor from the added ingredients. Milkshakes are often served in tall glasses with a straw and can be enjoyed as a sweet treat or dessert after a meal.