Most Americans eat some kosher food every day, but chances are they’re not aware of it. Take a walk down the aisles of any supermarket and you will see that certification appears on over 60% of America’s produced foods that are certified kosher, from the coveted Oreo to the thirst-quenching Coca-Cola. Over $150 billion of kosher certified products are consumed annually, and spending continues to rise dramatically.
Put the mock crab in a bowl but do not shred. Add 1 Tablespoon lime juice and toss to combine.
In a small bowl whisk together remaining tablespoon lime juice, mayonnaise, and mustard until smooth. Pour sauce over mock crab and toss to coat. Season mock crab mixture with salt and pepper and chill, covered, 30 minutes.
Lightly toast brioche or challah. Lightly butter toast.
Spoon one fourth mock crab mixture into a 1/2-cup measure. Invert mock crab onto bread, spread to reach the sides of the bread and set it on an ungreased baking sheet. Repeat procedure with remaining mock crab mixture and bread. Sprinkle 1 Tablespoon Parmesan over each sandwich.
Broil sandwiches about 3 inches from heat until cheese is melted and golden, 1 to 2 minutes.