I want to make a cocktail that must use gin and pineapple juice. I have many other ingredients, including mint leaves, lemon juice, and more. What options do I have?

Given your requirements and available ingredients, two excellent options stand out: the Pineapple Martini and the Ainsley Hariott. Both cocktails effectively use gin and pineapple juice but offer distinct experiences to suit different moods and occasions.

Pineapple Martini: This is a refined and vibrant cocktail that combines the tropical sweetness of pineapple juice with the smoothness of vodka (though you can substitute with more gin), accentuated by a hint of lime juice and sugar syrup. Served in a classic cocktail glass, the Pineapple Martini provides a balanced flavor profile that's both sweet and tangy, making it ideal for a more formal gathering or when you want a sophisticated tropical twist.

Ainsley Hariott: Named after a famous British chef, this cocktail is a refreshing blend of pineapple juice, gin, pink grapefruit juice, and Blue Curaçao. If you're looking for a more complex and visually stunning drink, this one’s for you. The combination of flavors creates a well-balanced, fruity, and slightly tangy beverage that's perfect for a hot summer day or any event where you want to impress your guests with a taste of the tropics.

Both of these options will allow you to utilize your gin and pineapple juice effectively. If you're feeling adventurous, you could also experiment by adding mint leaves to either of these cocktails for an additional layer of freshness. Enjoy your cocktail-making adventure!