A. found this one in Parenting magazine of all places:

What is Milkscreen?

Milkscreen is a simple, two minute test to detect for alcohol in breast milk.

Why use Milkscreen?

Because all mothers are unique! So, naturally the way our bodies process alcohol is unique, too. Metabolizing alcohol depends on several factors including:

• Body weight
• Type of alcohol consumed
• Food intake

Following generalized guidelines may result in using alcohol-tainted milk, but with Milkscreen Mom can ensure that her breast milk is alcohol free.

We were both kind of like: ???

But hey, if Baby wants a White Russian, right?

Link.