Peel Cucumber and halve it lengthways. Run a teaspoon down the middle to scoop out the watery seeds, then cut the flesh into rough 0.5 cm dice. Halve the Tomatoes, squeeze out the seeds and cut into 0.5 cm dice, keeping them a touch larger than the cucumber so they hold shape. Chop Red onions very fine, then drop it into a bowl of ice-cold water for 5 min to blunt its raw bite and make it crunchy. Drain the onion and pat it dry, and tip the chopped cucumber and tomato into a colander so any loose juices run off.

⚠ The seeds are the enemy: left in, they leak and turn the whole salad into soup within minutes.

⚠ A dry salad is a salad that stays sharp. Wet vegetables dilute the lime and go limp.

• Cucumber
• Tomatoes
• Red onions