Matzo major forms of matzo. In many western countries the most common form is the hard form of matzo which is cracker-like in appearance and taste and is used in all Ashkenazic and most Sephardic communities. Yemenites, and Iraqi Jews traditionally made a form of soft matzo which looks like Greek pita or like a tortilla. Soft matzo is made only by hand, and generally with "shmurah" flour. Flavored varieties of matzo are produced commercially, such as poppy seed- or onion-flavored. Oat and spelt matzo with kosher certification are produced. Oat matzo is generally suitable for those who cannot eat gluten.
H engine H engine An H engine (or H-block) is an engine configuration in which the cylinders are aligned so that if viewed from the front, they appear to be in a vertical or horizontal letter H. An H engine can be viewed as two flat engines, one atop or beside the other. The "two engines" each have their own crankshaft, which are then geared together at one end for power-take-off. The H configuration allows the building of multi-cylinder engines that are shorter than the alternatives, sometimes delivering advantages on aircraft. For race-car applications there is the disadvantage of a higher centre