Frozen custard comes from the "Custard Capital of the World", Milwaukee, Wisconsin, where it's sold more than anywhere else around the globe. It is a gourmet ice cream treat made with eggs, cream, and sugar, and it originated from Coney Island, New York, when it was a popular carnival treat.

As the popularity of frozen custard grew, it quickly spread to the Midwest. As there is far less air added than in other similar treats, the result is a thick and dense custard with tons of flavor. A lot of frozen custard fans believe it is better than ice cream since it is served before being refrozen and mantains a soft, yet heavy consistency, so it is a unique regional treat in which you can really feel the difference when talking about flavor.

As the name suggests, brownie sundae is a type of ice cream sundae with added brownies. Squares or pieces of rich, warm, and moist chocolate brownies are typically layered in a serving bowl with a few scoops of ice cream on top, and the whole thing is then finished with a drizzle of sweet sauces or syrups such as hot chocolate fudge, caramel sauce, or strawberry sauce.

Any ice cream flavor can be used for this dessert, and some of the most common flavors include vanilla, chocolate, strawberry, caramel, coffee, and cheesecake. Whipped cream, nuts, diced fruit, sprinkles, and chocolate chips are just a few common additions to this sweet treat.

Milkshakes are usually described as flavored milk and ice cream beverages, usually lavishly decorated and served cold. The first written mention, dating from 1885, was somewhat different, and the word was used to refer to a whiskey drink, similar to eggnog, which was used as a health remedy.

At the end of the 19th century, milkshakes were already prepared as milk-based drinks made with flavored syrups. The invention of malted milk powders which contained dried milk, malted barley, and wheat flour, along with the popularization of electric blenders, inspired the creation of a more familiar milkshake version. 

Cookies 'n cream ice cream is a beloved frozen dessert made by blending vanilla-flavored ice cream with crushed or chopped chocolate sandwich cookies, typically Oreos. Its creamy texture and the bittersweet crunch of the cookies create a balanced and indulgent flavor.

First created in the late 1970s or early 1980s, with origins claimed by Dairy Queen, Blue Bell Creameries, and South Dakota State University, it quickly became one of the most popular ice cream flavors. Widely available from major ice cream brands, it can be enjoyed on its own or enhanced with toppings like hot fudge, whipped cream, or extra cookie crumbles. 

Fried ice cream is a decadent treat made by coating a scoop of ice cream in crumbled cookies or cornflakes, then deep-frying it for a short period of time until golden-brown in color on the exterior. The scoop of ice cream should ideally be frozen below the usual temperature at which ice cream is kept, in order not to melt when fried.

If served in the most traditional way, frozen ice cream is placed on a cinnamon-sugar tortilla shell. This dessert became popular during the 1980s, and it was first adopted by a famous Mexican restaurant chain.

Frozen yogurt is a frozen dessert treat made with yogurt and (sometimes) other dairy products and flavorings. It is lower in fat than ice cream due to the use of milk instead of cream. Frozen yogurt is usually served with numerous toppings such as strawberries, bananas, or chunks of cookies and candy.

The first frozen yogurt was produced in the 1970s in New England, but the name of its inventor is still a mystery. Originally, it was made as a low-fat option for people who consumed ice cream, but it wasn't a big success due to the fact that most Americans preferred the sweet ice cream over the tart frozen yogurt. 

Along with Banana Split, sundae is one of the most served ice cream-based desserts in the United States of America. A sundae is ice cream topped with a sauce or syrup, typically served in a bowl. The most popular varieties of sundae are chocolate caramel, butterscotch, and strawberry.

Cherries, dairy cream, and nuts are the most common additions to the popular treat. Food historians still argue about the origin of the ice cream sundae, but there are three theories which remain the most popular. The first one says it was created in Illinois, where the law prohibited the selling of soda water on a Sunday. 

Ice cream sandwich is an American dessert that dates back to New York City in 1899. It was allegedly invented by an unknown pushcart vendor in the Bowery who sandwiched vanilla ice cream between two thin wafers. The treat was so popular that the vendor didn't have time to make a change, so he charged a penny per ice cream sandwich.

Nowadays, ice cream sandwiches are not made with only wafers and cookies, there are varieties which are prepared with brioche, waffles, croissants, and even churros.

An ice cream float is a beverage consisting of ice cream that is placed in a soft, fizzy drink. One of the most popular varieties of the beverage is a root beer float. The origins of ice cream floats date back to the 19th century. It was invented in Philadelphia by Robert Green, a soda shop operator who ran out of cream and decided to use ice cream instead of it.

Shortly after, his daily earnings soared from $6 to $600. With the popularity of ice cream floats, it is no wonder that there are numerous variations such as chocolate ice cream soda, coke floats, purple cow, butterbeer, and Boston cooler.