Cambodian cuisine distinctive and complex spice blend called "kroeung." Other ingredients for kroeung used by Khmers in America are lemongrass, turmeric powder, garlic, prahok, and lemon leaf. This is an important aromatic paste commonly used in Cambodian cooking. Many vegetables used in Khmer cuisine are also used in Chinese cuisine. Vegetables such as winter melon, bitter melon, luffa, water spinach and yardlong beans can be found in soups and stews. Oriental squash can be stewed, stir fried or sweetened and steamed with coconut milk as a dessert. Vegetables like mushrooms, cabbage, baby corn, bamboo shoots, fresh ginger, "kai-lan" ("Chinese kale"), snow peas,
Black powder rocket motor was the birth of the true composite motor and marked the end of the use of black powder in major rocketry applications. Black powder rocket propellant is very similar in makeup to old-fashioned gunpowder. The main difference is the presence of a binder, usually dextrin. The commonly used Estes model rocket engines are made with black powder propellant. Black powder propellant must be pressed very tightly in order to function well. Motors designed with black powder are most often end-burners, due to the fast burn rate of this propellant. A simple dextrin-free version (the most commonly used formulation) incorporates 75%