Heat a small, nonstick skillet over medium-low heat. Sprinkle 1 tablespoon of the Parmigiano in the center of the pan, making a circle about 3 inches in diameter. Cook until the cheese melts and the cheese strands intertwine like a web, about 2 minutes. Donâ€™t touch the cheese until the bottom starts to get lightly golden. Then press the cheese down with the bottom of a spatula so it sets. Take the pan off the heat for a second to let the cheese round set. Carefully remove the cheese round from the pan and place it over the top of a water or soda bottle. While it is still hot, press the cheese down so it forms a cup shape; let it cool and harden. This will be the edible container for the tartare.
Right before you plan to serve this, cut the beef into cubes and put it in the processor. Pulse the steak until it looks like ground beef. Transfer the meat to a bowl and fold in all of the remaining ingredients except the chives. Season with salt and pepper.
Put a teaspoonful of the steak tartare into each Parmigiano cup. Garnish with chopped chives and serve immediately. I recommend filling the cheese cups in batches so the meat doesnâ€™t sog the bottom.
Note: Raw Egg Warningâ€”The American Egg Board states: â€śThere have been warnings against consuming raw or lightly cooked eggs on the grounds that the egg may be contaminated with Salmonella, a bacteria responsible for a type of food poisoning. Healthy people need to remember that there is a very small risk and treat eggs and other raw animal foods accordingly. Use only properly refrigerated, clean, sound-shelled, fresh, grade AA or A eggs. Avoid mixing yolks and whites with the shell.â€ť
Edited: October 9th, 2009