When washing any kind of lettuce, the main priority has to be that your guests are not grinding on grit or sand whilst eating your much loved salad that you have prepared for them…there is nothing worse.
When washing lettuce it is best to fill a clean sink with fresh cold water so that when all the lettuce is placed in the sink, there is at least 6 inches of water between the lettuce and the bottom of the sink.
Mix around the lettuce whilst washing each leaf individually and allowing all the sand to fall to the bottom of the sink. When this is done, whilst leaving the water in the sink, the lettuce must all be scooped out of the water and then placed to one side.
Then the water is drained off, the sink thoroughly washed and the same process completed a second time, after this is completed the lettuce is now clean.
You must not allow the water to drain first and the lettuce to touch the bottom of the sink as the lettuce will get mixed up with the sand and place you back to square one.