Simply slice cucumbers into even size rounds. If using an Indian cucumber, you might want to peel it first (or peel partially for stripes) and then slice. Next, stack the cucumber slices and cut them into even size sticks. This helps keep the salad crisp.
In a medium bowl, combine the peanut butter, lime juice, soy sauce (or tamari), sugar, minced garlic, salt to taste, and sesame oil. Whisk vigorously until smooth.
The dressing will be quite thick initially. Gradually add 2 tablespoons of room temperature water, one tablespoon at a time, whisking continuously until the sauce reaches desired pourable consistency.
Taste and adjust seasonings – you might want more lime for tang, more sugar for sweetness, or a pinch of salt.
In a large mixing bowl, gently combine the sliced cucumber, and the salad dressing. Sprinkle, sesame seeds, crushed peanuts, chopped green onion, and Gochugaru or smoked red paprika. Gently mix, making sure each piece of cucumber is coated with the sauce.
Thai Cucumber Salad is ready to serve!