7. Tomato Paste
At 0.5 mg per cup, raw tomatoes contain very little iron. However, when dried or concentrated, they offer a much greater amount.
For instance, half a cup (118 ml) of tomato paste offers 3.9 mg of iron, or 22% of the RDI, whereas 1 cup (237 ml) of tomato sauce offers 1.9 mg, or 11% of the RDI.
Sun-dried tomatoes are another iron-rich source, providing you with 1.3–2.5 mg per half cup, or up to 14% of the RDI (36, 37).
Tomatoes are also a great source of vitamin C, which helps increase iron absorption. Moreover, they’re a great source of lycopene, an antioxidant linked to a reduced risk of sunbur.
Potatoes contain significant amounts of iron, mostly concentrated in their skins.
More specifically, one large, unpeeled potato (10.5 ounces or 295 grams) provides 3.2 mg of iron, which is 18% of the RDI. Sweet potatoes contain slightly less — around 2.1 mg for the same quantity, or 12% of the RDI.
Potatoes are also a great source of fiber. Additionally, one portion can cover up to 46% of your daily vitamin C, B6 and potassium requirements.