What's in the bowl? Ice cream made in less than 90 seconds using liquid nitrogen (perfectly safe).

If you want to beat the heat in a hurry, add the LN2 Creamery Cafe at Main Street Bakery in Port Washington to your gastro travels this week. Newsday's Erica Marcus writes about the instant ice cream gratification served up by LN2—and there's video of the mad scientists as well.

Main Street Bakery is at 170 Main St., Port Washington; 516-304-5214.