Ingredients

• 1/2 seedless cucumber
• 5 tablespoons fresh lime juice
• 3 tablespoons water
• 3 tablespoons Asian fish sauce
• 3 tablespoons sugar
• 1 teaspoon dried hot red-pepper flakes
• 1 medium shallot, thinly sliced
• 1 pound fresh pineapple chunks (about 4 cups)
• 3/4 pound deli sliced roast beef
• 12 long sprigs fresh mint

Instructions

1. Halve cucumber lengthwise, then slice diagonally 1/4 inch thick.
2. Stir together lime juice, water, fish sauce, sugar, red-pepper flakes, and shallot in a small bowl until sugar is dissolved.
3. Arrange pineapple and cucumber on a platter and drizzle with some of dressing. Drape roast beef slices on top and arrange mint alongside. Serve with remaining dressing on the side.