Mussels Tostada with Russian Salad and Chipotle Mayonnaise

Ingredients

• 2 lb. mussels, scrubbed
• 1 cup white vinegar
• ¹⁄₄ cup rice vinegar
• 1 tsp. smoked paprika
• 3 allspice berries
• 3 cloves garlic (1 thinly sliced, 2 peeled and crushed) 1 (1″) piece ginger, grated
• 1 serrano chile, thinly sliced
• ¹⁄₂ small white onion, thinly sliced
• Kosher salt and freshly ground black pepper, to taste
• ¹⁄₄ cup canola oil, plus more for frying
• 1 cup extra-virgin olive oil
• 2 carrots, cut into ½″ pieces
• 2 large russet potatoes, peeled and cut into ½″ pieces
• 1 tbsp. fresh lime juice
• 2 chipotle chiles in adobo, seeded
• 1 egg yolk
• 1 dried pasilla chile, stemmed and seeded
• 6 (6″) yellow or white corn tortillas
• Minced chives, for garnish