Sardine Bánh Mì

Name: Sardine Bánh Mì
Ingredients: From Diane Cu and Todd Porter.; 2 tablespoons rice vinegar; 2 tablespoons sugar; 2 tablespoons salt; 1/2 cup peeled and coarsely grated carrots; 1/2 cup peeled and coarsely grated daikon; 1 24-inch baguette; 4 teaspoons mayonnaise; 2 tablespoons pork liver pâte; 2 (4-ounce) tins sardines in tomato sauce; 1 Persian or Japanese cucumber, thinly sliced on the bias into 1/8 -inch rounds; 1/4 cup loosely packed fresh mint leaves; 1/2 bunch fresh cilantro with stems attached; 2 whole jalapeños, thinly sliced; Soy sauce to taste