Rice cracker
A rice cracker is an East Asian cracker made from rice flour. They are fried or baked and often puffed and/or brushed with soy sauce or vinegar to create a smooth texture. Rice crackers are often eaten as part of trail mixes along with other ingredients such as wasabi peas, nuts, dried and salted edamame, and sesame sticks. Some may also be wrapped in seaweed. In addition to in trail mixes or by themselves, they are traditionally served with green tea, alcoholic beverages, and/or as a side to be eaten with soup or salad. Preparation

Types
Rice crackers come in many varieties and shapes. Some of the most popular are listed below. They are thought to have originated in Japan during the Edo period, however records of senbei being served to houseguests as a token of courtesy date back to the Tang dynasty. Japan 
, a dry Japanese confectionery made from rice
Arare (food), a stone-shaped, bite-sized Japanese rice cracker
Oriibu no hana ('olive flower')
Senbei, a flat disk-shaped, palm-sized cracker traditionally eaten with green tea
Kaki no tane, small, seasoned crescent-shape snacks that bare a resemblance to peanuts

Indonesia 
 Rengginang, a thick cracker made from sticky rice granules

See also 
Puffed grain
Puffed rice
Rice flour

References 

Rice crackers