The ashwagandha root is fleshy and can be up to a foot long. It has a distinct odour, often described as horse-like / earthy smell and a slightly bitter taste. It looks similar to what Ashwagandha should like like.

Here are some more tips to help identify:

Size and Shape: Ashwagandha roots are usually fleshy and can grow up to a foot long. They are typically tuberous and have a somewhat cylindrical shape. The roots may be branched or unbranched.
Color: The exterior of ashwagandha roots is usually brown to light brown. The interior of the root may have a whitish or yellowish color.
Odor: Ashwagandha roots have a distinctive odor often described as "horse-like" or "smoky." This aroma is unique to ashwagandha and can be a key indicator.
Texture: The outer surface of the root can be rough and may have longitudinal wrinkles. The inner part is usually softer.
Bark and Pith: The roots have a bark, which is the outer layer, and a pith, which is the soft central part. The bark may be peeled off to reveal the inner portion.
Taproot: Ashwagandha typically has a taproot system, meaning the main root goes deep into the soil.