Rinse 1 cup of ripe strawberries, pat dry, remove tops, and dice into small pieces.

In a medium saucepan, combine diced strawberries, 1 cup of sugar, and 1 cup of water. Heat until boiling, then simmer for 20-30 minutes, stirring occasionally.

After simmering, cool slightly and strain through a fine mesh sieve into a bowl. Refrigerate for 2-4 hours until chilled.

Boil 3 cups of water, pour over 3-4 tea bags in a heatproof jug, and let steep for 5-10 minutes.

Stir in 1 cup of sugar into cooled tea until dissolved. Pour into a pitcher, adding 8-10 cups of cold water, chilled strawberry syrup, and 2 tablespoons of lemon juice.

Cover and chill in the refrigerator for 2-3 hours.

Serve in glasses filled with ice, garnished with lemon and strawberry slices.