Cumin

Whole Cumin Seeds: The most common form, used in various cuisines.
Ground Cumin: Powdered form, convenient for use in recipes.
Black Cumin (Kala Jeera):1 Smaller, darker, and more aromatic than regular cumin.
Purity: Usually 99% or higher, indicating freedom from foreign matter and other seeds.
Size and Shape: Seeds should be uniform in size and shape, typically oblong and slightly curved.
Color: Should be a consistent light brown to brown color.
Aroma: Strong, characteristic aroma, warm and earthy.
Flavor: Warm, slightly bitter, and pungent.
Moisture: Should be within a specified range (usually below 10%) to prevent mold growth.
Foreign Matter: Minimal presence of extraneous materials like dust, stones, or plant debris.
Defects: Minimal presence of damaged, discolored, or insect-infested seeds.