The 404 Cocktail is a bright, refreshing mix with a pale orange color and a slightly sweet taste reminiscent of grapefruit juice. Here are the ingredients and instructions:

Ingredients:

• 1 1/2 oz vodka
• 3/4 oz lemon juice
• 3/4 oz St. Germain elderflower liqueur
• 1/2 oz Aperol
• 1/2 oz simple syrup
• Orange or lemon twist for garnish

Instructions:

1. Measure all ingredients into a shaker filled with ice
2. Shake until cold (about 15 seconds)
3. Strain into a cocktail glass
4. Garnish with a lemon or orange twist

There’s also a variation called The 503, which substitutes gin for vodka while keeping all other ingredients the same.