Genocide, including the Golden Globe-nominated Hotel Rwanda, 100 Days, Shake Hands with the Devil, Sometimes in April, and Shooting Dogs, the last four having been filmed in Rwanda and having featured survivors as cast members. Fourteen regular national holidays are observed throughout the year, with others occasionally inserted by the government. The week following Genocide Memorial Day on 7 April is designated an official week of mourning. The victory for the RPF over the Hutu extremists is celebrated as Liberation Day on 4 July. The last Saturday of each month is umuganda, a national morning of mandatory community service lasting from 8am to 11am, during which all able bodied people between 18 and 65 are expected to carry out community tasks such as cleaning streets or building homes for vulnerable people. Most normal services close down during umuganda, and public transportation is limited. Cuisine The cuisine of Rwanda is based on local staple foods produced by subsistence agriculture such as bananas, plantains (known as ibitoke), pulses, sweet potatoes, beans, and cassava (manioc). Many Rwandans do not eat meat more than a few times a month. For those who live near lakes and have access to fish, tilapia is popular. The potato, thought to have been introduced to Rwanda by German and Belgian colonialists, is very popular. Ugali, locally known as Ubugari (or umutsima) is common, a paste made from cassava or maize and water to form a porridge-like consistency that is eaten throughout the African Great Lakes. Isombe is made from mashed cassava leaves and can be served with dried fish, rice, ugali, potatoes etc. Lunch is usually a buffet known as mélange, consisting of the above staples and sometimes meat. Brochettes are the most popular food when eating out in the evening, usually made from goat but sometimes tripe, beef, or fish. In rural areas, many bars have a brochette seller responsible for tending and slaughtering the goats, skewering and barbecuing the meat, and serving it with grilled bananas. Milk, particularly in a fermented yoghurt form called ikivuguto, is a common drink throughout the country. Other drinks include a traditional beer called Ikigage made from sorghum and urwagwa, made from bananas, and a soft drink called Umutobe which is banana juice; these popular drinks feature in traditional rituals and ceremonies. The major drinks manufacturer in Rwanda is Bralirwa, which was established in the 1950s, a Heineken partner, and is