Steps
- Wash 1.35kg of lemons. Peel off the yellow zest, then remove and discard all white pith. Slice the flesh thinly and remove the seeds.
- Combine the zest, 1¼ cups of sugar, and ¾ cup of water in a saucepan. Bring to a boil, then simmer very gently for 20 minutes.
- Add the lemon flesh and simmer for another 10 minutes, until little liquid remains. Let cool.
- Blend with half of 10 cups of cold water for 3 minutes, working in batches if needed. Transfer to a covered container and refrigerate for at least 6 hours.
- Strain through a fine sieve or cheesecloth. Stir in the remaining cold water and serve chilled.