1Combine cauliflower, olives, green bell pepper, onion, and pimento peppers together in a bowl.
2Whisk canola oil, vinegar, lemon juice, salt, sugar, and black pepper together in a bowl until smooth; pour over vegetable mixture and toss to coat. Cover bowl with plastic wrap and refrigerate until flavors blend, 4 hours to overnight.
Substituting olive oil may alter the flavor. I recommend marinating this salad overnight.