Place the potato in a medium-sized saucepan and cover with cold water. Add the bay leaf, whole garlic cloves and salt, then bring to the boil over high heat and reduce to a simmer. Cook until you can easily pierce the potato with a knife. Drain, remove the bay leaf, and transfer the potato and garlic to a large bowl along with 1 tablespoon of the butter. Mash, then season to taste and set aside to cool to room temperature.
Drain the hearts of palm and rinse under cold water. Cut into 1-inch lengths and shred with your fingers until it resembles crab meat.
Heat the remaining tablespoon of butter in a medium-sized frying pan over medium heat. Add the shredded hearts of palm and fry for a few minutes, until it begins to lightly brown. Add the celery, spring onion, jalapeño and crushed garlic. Cook until the vegetables begin to soften, then add the Old Bay Seasoning and ground cumin. Season with salt and pepper, then transfer this mixture to the mash. Add the mustard, dill, coriander and lime zest and stir to combine. Put the mixture in the fridge to cool completely.
Shape the mixture into tennis ball-sized balls (or roll into golf ball-sized balls for a finger-food option). Flatten your balls into thick discs and put back into the fridge for about 30 minutes to firm up.
To prepare the crumb, pour the soy milk into one bowl and add the vinegar. Mix and set aside – it will thicken slightly. Add the flour to another bowl and season to your liking with salt and pepper. Place the panko crumbs in a third bowl.
Coat each crab cake with the flour, then dip into the soy milk wash and finally in the panko breadcrumbs. Make sure they are well coated with no gaps.
Place the crumbed crab cakes back into the fridge so the crumb can set.
Pour vegetable oil in a large frying pan until 1 cm (1/2 in) deep and place over medium heat. Cook the crab cakes, 3–4 patties at a time, for 3–4 minutes on each side until golden and crunchy. Drain on paper towel and season with salt flakes.
Serve with mango salsa and avocado cream or any aioli dipping sauce that you love.