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1
Prepare ahead
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2
Step 1 can be completed 1 hour in advance, and the cucumber slices stored in the refrigerator.
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3
Using a sharp knife, carefully slice the cucumber into rounds, no thicker than 1/8 in (2mm).
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4
Place the cucumber slices in a colander and sprinkle with the salt.
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5
Let stand for 20-30 minutes to allow the excess liquid to drain off.
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6
When ready to use, sprinkle the slices with the vinegar.
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7
Spread each slice of bread with some softened butter.
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8
Arrange the cucumber slices in an even layer over 4 slices of bread.
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9
Season with pepper, then top with the remaining bread slices, buttered sides down.
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10
Cut off the crusts from each sandwich, then cut each sandwich into squares, triangles, or rectangles.
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11
Arrange the sandwiches on a serving plate.
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12
Sprinkle with watercress, and serve at once.
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13
Variation
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14
Cheese and Cucumber Sandwiches
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15
As an alternative to butter, spread the bread with cream cheese or soft goat cheese.
