Step 1

1 Dice the cucumbers, then transfer them to a blender and puree until smooth

Step 2

2 Press the puree through a fine-mesh strainer placed over a bowl, or through a colander lined with cheesecloth seated over a bowl

Step 3

3 Discard the solids

Step 4

4 Transfer the resulting liquid to a bottle large enough to hold 4 cups

Step 5

5 Add the vinegars, sugar and kosher salt

Step 6

6 Seal, and shake vigorously until the sugar and salt have dissolved

Step 7

7 Refrigerate until ready to use; shake before using