There comes a time in every adult’s life when they need to stop ordering overpriced margaritas at the bar and learn how to make tried-and-true classic cocktails at home. Although it may seem difficult, not all cocktail recipes require fancy ingredients and expensive top-shelf liquor.

Here are 3 simple cocktails everyone should know how to make before they’re 30.

Old Fashioned

Every cocktail-drinking adult should have a few classics up their sleeve. A well-built Old Fashioned is a must, this cocktail has been around since the 1800s for a reason.

Manhattan

With an interest in old-school cocktails, a Manhattan is a great drink to nail down. Besides being impressive, this drink represents a broad category of similar spirit-forward drinks, including the Martini and James Bond’s signature Vesper.

Martini

For the good of the people, you should know how to make this Hollywood-famous cocktail. The classic cocktail is mostly made with a dry gin, so if you’re making a vodka martini it needs to be specified. A traditional Martini is made as follows: two ounces of gin, half an ounce of dry vermouth, stirred, and served with a twist of lemon.