01 -
Heat the olive oil in a skillet over low heat. Add the sliced onions and 1/4 teaspoon salt. Stir every 3–5 minutes, allowing onions to soften and develop a deep golden colour, about 45 minutes. In the final minute, add the minced garlic and cook until aromatic.
02 -
Meanwhile, bring a large pot of salted water to a boil. Add the farfalle and cook until al dente according to package instructions. Reserve some pasta water, then drain and let the pasta cool completely.
03 -
In a large mixing bowl, whisk together sour cream, mayonnaise, white wine vinegar, chopped parsley, chives, and soy sauce. For a thinner consistency, add cooled pasta water 1 tablespoon at a time until desired texture is reached.
04 -
Add the cooled pasta and caramelised onions to the dressing, reserving a small amount of onions for garnish. Gently toss until evenly coated. Adjust seasoning if needed.
05 -
Top with the reserved caramelised onions, parsley leaves, and freshly ground black pepper. Serve chilled or at room temperature. Refrigerate leftovers for up to two days.