Divide the frozen berries into each section of an ice cube tray. Cover with water and freeze overnight.
Roll 4 lemons on a hard surface with your palm. It will help to make the lemons jucier. Cut 4 lemons in half and use a juicer to juice the lemons over a bowl. A mesh strainer is helpful to catch the seeds.
Slice 2 lemons in rings and add to a pitcher. Add lemon juice, simply syrup and water to the pitcher and mix with a spoon.
Refrigerate until chilled.
Serve cold with berries ice cubes in glasses. Lemonade will turn red when cubes melt.
You can store this in the refrigerator for 4 days. Simple Syrup is equal parts granulated sugar and water. Heat until first bubbles form and then remove from heat, cool, and store in an airtight bottle in the refrigerator. You can use the same quantity of granulated sugar in place of the simple syrup but be sure to mix well until dissolved.