1 large egg yolk
1 garlic clove, smashed, peeled, and trimmed
3 anchovy fillets, packed in oil, drained
1 tablespoon plus 1 1/2 teaspoons lemon juice
1 tablespoon plus 1 1/2 teaspoons red wine vinegar
1 tablespoon Dijon mustard
1 teaspoon dried oregano
1 teaspoon colatura (Italian fish sauce; optional)
1/4 teaspoon cayenne
1/2 cup canola oil
1/2 cup plus 2 tablespoons olive oil, divided
1/2 cup freshly grated grana padano cheese
Freshly ground black pepper
4 ounces country bread, crusts removed, bread torn into small pieces
Two (5-ounce) containers baby kale
Preheat oven to 400°F. Pulse egg yolk, garlic, anchovies, lemon juice, vinegar, mustard, oregano, colatura (if using), and cayenne in a food processor or blender until smooth. Combine canola oil and 1/2 cup olive oil in a measuring cup with spout. With the motor
running, add blended oil in a very thin stream; purée until a creamy emulsion forms. Add cheese and pulse to combine. Season dressing with salt and pepper.
Toss bread with remaining 2 Tbsp. olive oil and spread on a rimmed baking sheet. Bake, tossing once or twice, until crisp and lightly browned, about 10 minutes. Let cool completely.
Combine kale and croutons in a large bowl. Add 1/2 cup dressing and toss to combine.
Dressing can be made up to 5 days ahead. Refrigerate in an airtight container.