What are food sources of thiamine?

Thiamine (Vitamin B1) can be found in many foods. Very good sources of Vitamin B1 include asparagus, romaine lettuce,mushrooms,spinach,sunflower seeds,tuna,green peas,tomatoes,eggplant and Brussels sprouts. Pasta and most breads made from refined flours are enriched with thiamin because thiamin is one of the nutrients lost in processing.