Raspberry Dessert Sauce

Bahan-bahan (1 porsi)

• 1 Tablespoon water
• 2 teaspoons cornstarch
• 3 cups (about 12 ounces/375g) fresh or frozen raspberries
• 1/4 cup (50g) granulated sugar
• 1 teaspoon fresh lemon juice (do not leave out)
• optional: 1/2 teaspoon vanilla extract