2 fluid ounces vanilla-flavored vodka
3 fluid ounces pineapple juice
1 splash sweetened lime juice (such as Rose’s®)
3 miniature marshmallows, or to taste
Fill a cocktail shaker with ice. Pour vodka, pineapple juice, and lime juice over ice; cover and shake. Strain cocktail into a martini glass. Garnish with marshmallows.