Tender black beans are at the heart of this scrumptious burger that includes crunchy bits of green bell pepper and pungent red onion. But the very best part is an outrageously delicious sauce of creamy housemade mayo, orange juice, agave nectar, Dijon mustard, soy sauce and flecks of green onion. Topped with slices of freshly grilled pineapple. Mmm! Mmm!