To start, you need to soften and cook the vegetables that will make these burgers so tasty! Preheat a 12 inch skillet over medium heat, add the canola oil, scallions, celery, and apples, seasoning with the salt and pepper to release the juices. Cook over medium heat, avoiding browning, just until everything is soft and pliable. Remove, and cool on a separate plate.
When the vegetables are cooled, add them to the turkey meat in a large bowl, along with the tabasco, lemon zest and juice, parsley, and mango chutney (if you are using Major Grey's brand, be sure to puree it in a blender before incorporating). Form the mixture into 6 large or 12 smaller slider size burgers. and refrigerator for at least one hour, preferably several hours.
I prefer cooking these in a heavy cast iron skillet vs. a grill, but you can do either. For the skillet, preheat over medium high heat, and for sliders, you will want to cook about 5 minutes per side, tenting with foil to cook through, or using a lid on the pan that vents to prevent steaming (leave a one inch gap at least). For full size burgers, this will take about 7-8 minutes per side. Flip, and cover with cheese at the end to melt during the last minutes of cooking. If you are using a grill, the same cooking times will likely apply over a medium level of heat.
For serving, I like to combine 1/2 cup of mayonnaise with 2 Tbsp of mango chutney and 2 dashes of tabasco - this is a great spread to go on the buns - like a spicy aioli. I top with micro greens and that's it - avocado is delicious on these as well.