Unlike bread, roti really tastes good when it is freshly made. Roti-making is a skill that takes some time to acquire. To compound the situation, there are many types of rotis and further complicating it, are the differences arising out of cultural evolution.
In the Caribbean and countries with its Diaspora, one can find the tawa-based rotis like sada, dosti, dhalpuri, aloo, pepper, paratha. A tawa is circular flat sheet of iron which is heated by placing it on a chulha (traditional fire place) or a gas/electric stove. The roti is placed on it and turned over, periodically, for both sides of it to be cooked.
In India there are different varieties like nan, chapatti and paratha. These use different types of flours and the end products are significantly different their Caribbean cousins. The Indian paratha is more akin to the Trinidadian aloo roti and the both the nan and chapatti bear little resemblance to the sada roti. The common denominators are the labour-intensive and skilled processes involved in making them. So any help manual or otherwise is always welcome.
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