Brown ground beef in a non-stick pan, seasoning with salt and pepper. When its just cooked through, drain on paper towels to dispose of excess grease. Return beef to pan, along with enough drained oil so it's moist, add the cardamom, cayenne, crushed/chopped garlic and the finely chopped onion. Cook until the onion & garlic is softened and spice is fragrant. Remove from heat and cool.
To form the sambosas, take about a tablespoon (if using the small wontons, more if using the egg roll size), not too much, ensuing that you can fold the wonton over into a triangle without the filling falling out. Brush one side of the wonton with water at the edge to make a tight seal, using either your fingers or tines of a fork to do this. Make all the sambosas and keep on a sheet covered with paper towels to prevent sticking. You can do all this ahead of time and store covered with Plastic Wrap in the fridge till ready to cook.
When ready to finish the sambosas, put a nonstick pan or pot onto med/high heat and add enough oil for shallow frying, about half to 3/4 an inch of oil should do it. Shallow fry in batches till golden brown, and drain on a wire rack or paper towels. Sprinkle lightly with salt and serve, best when hot but are good at room temp too. I serve them with my family's chilled yogurt sauce(see other recipe). Not healthy but delicious, even my southern wife and family loves them!