What is the origin of the x on moonshine or alcohol?

The "X" on moonshine or alcohol traditionally signifies the product's potency or strength, often denoting that it is homemade or illicitly produced. This symbol dates back to the Prohibition era in the United States, when illegal distillers used the "X" to indicate that their liquor was high-proof. Over time, it has become a popular motif in the branding of various Alcoholic Beverages, symbolizing a rustic or traditional approach to distillation.