AMMO by MIG Enamel Heavy Mud - Enamel Mud for Modelling
Color: Moist Ground

From the Manufacturer:

Satin Damp Ground textured enamel medium for creating damp or wet high density ground. Realistically adds the final touches of variable textured mud to your model. Apply with a brush or tool, manipulate or remove with a clean brush moist with thinner. This effect can used alone or with other enamel earth tones.

As this product is enamel, they can be diluted with A.MIG-2018 Odorless Thinner to easily create streaking effects or very smooth transitions.