Combine marinade ingredients, mix with beef
Marinate for minimum 4 hours
Drain marinade off, reserve marinade
measure reserved marinade, in a small stockpot, add reserved marinade, for every 1/2 cup of marinade add 1 tbsp of cornstarch. Stir to incorporate cornstarch thoroughly, bring to a boil and reduce to a simmer. You want this to be a little on the thick side because vegetables contain water which will thin it down. Set this sauce aside
In a saute pan or wok add 1 tablespoon of oil, heat, add ginger, stir on heat for one minute. Remove ginger. Ginger is a bold spice if left in the dish. Add garlic then add meat. With a wok spoon and shovel work the product to the edges of the pan. Maximizing the heat on the surface to cook the meat. In a wok, this should be quick. 1 - 2 minutes. Remove meat and set aside
Caramelize your pineapple, you want to do this separate from the meat because of the high moisture content. The pineapple needs more surface space to achieve browning. Remove the pineapple when browned
Now add 1 Tablespoon sesame oil, then add the item which will take the longest to cook. The carrots. Work them in the pan as you did the beef for 1 - 2 minutes, then add your peppers do the same for 1 -2 minutes. Now add your broccoli, your lime juice, chicken stock, and your cilantro. stir, cover for 1 minute. Remove lid
Add thickened sauce, stir
add previously cooked udon noodles, Stir them with 2 large spoons or wok spoon and wok shovel
return meat and pineapple to the pan, stir
platter up and garnish the top with sesame seeds