Add the gin (or vodka) and dry vermouth to a mixing glass filled with ice and stir until drink is fully chilled.
Use a strainer to pour into a chilled martini glass and garnish with lemon peel or olive skewer. Enjoy!
Notes
Tips for a Dry Martini
You'll want to get the perfect amount of ice melt to your drink as that little bit of water changes the flavor the longer you shake or stir your martini in ice, so experiment with different amounts of time you let it chill over ice to find the right ice melt ratio for you.
Choose a lemon peel for garnish if you want to add a dry citrus note, or go for the olive if you want a more savory and salty addition.
A 6:1 or 5:1 ratio are the classic gin to vermouth combos, but play around with your ratios to see if you like yours more on the "wetter" or "drier" side.