Place the raspberries, sugar, water, and lemon juice in a medium saucepan. Bring to a simmer over low-medium heat and stir until the sugar is dissolved. Allow the mixture to continue to simmer for 8 to 10 minutes until the fruit has broken down.
16 ounces raspberries, 1 cup granulated sugar, 1 cup water, 1 teaspoon freshly squeezed lemon juice
Remove from heat, and allow the mixture to cool for 10 to 15 minutes or longer if desired. Pour the mixture through a mesh sieve to remove the fruit pieces and seeds.
Use the raspberry syrup to flavor sodas, alcohol based drinks, or as a drizzle for desserts. Store the leftover in the refrigerator for up to a week.
Notes
The calories listed are an approximation based on the ingredients and a serving size of about 2-ounces (1/4 cup) of the raspberry syrup. Actual calories will vary.