Earth oven is added over everything. The food in the pit can take up to several hours to a full day to cook, regardless of the dry or wet method used. Today, many communities still use cooking pits for ceremonial or celebratory occasions, including the indigenous Fijian lovo, the Hawaiian imu, the Māori hāngi, the Mexican barbacoa, and the New England clam bake. The central Asian tandoor use the method primarily for uncovered, live-fire baking, which is a transitional design between the earth oven and the horizontal-plan masonry oven. This method is essentially a permanent earth oven made out of clay or
Masonry oven bearing insulation and provides an easy way to break contact with surrounding cold. Some earthen oven builders use a lo-cost combination of empty glass bottles surrounded by an insulative mix of clay and fine organic matter (sawdust, chaff, nut shells, etc.); as the organics burn out, they leave thousands of tiny voids in the clay, making a spongey, insulative, and firm foam-like material. To keep the top of the oven warm, masons may build walls around the oven, crib-like, to make space for a loose cover of perlite, pumice, or vermiculite. For a smaller profile and a rounder look, the