Combine soy sauce, sesame oil, ginger, and garlic into stir-fry sauce
Combine tahini and coconut oil into tahini-coconut sauce
Add Scallion whites, 1 tbsp stir fry sauce, and 1 tbsp cold water with ground beef and season well with salt and pepper. Stir vigorously with a wooden spoon until “creamy”. Put bowl in freezer for 10 minutes.
Put cucumber, green scallions, and juice of half the lime in a plastic bag. Smash the cucumber pieces with the back of a spoon.
Add tahini-coconut sauce, 1 tbsp stir-fry sauce, and sesame seeds and mix in bag. Set aside
Scoop out meat mixture and form meatballs (use wet hands)
Fry the meatballs in a lightly oiled pan. 4 minutes on one side to set, 2 minutes on other side, then cook for 2 more minutes stirring frequently to cook through.
Remove from heat and add remaining stir-fry sauce.
To serve, toss spinach with the cucumber mixture and top with meatballs.