Of course, people are worried about spreading bacteria. But the judy bird recipe still includes the washing step.
I don't want to skip it if it will impact the flavor.
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Julianna114—I just used a similar method on capons not two weekends ago, and I did not wash the bird; it didn't affect flavor at all! I did pat the whole thing dry, though.
My take is that rinsing was included as the first step not because it will have any impact on flavor, but for food safety. Of course we now know it has no benefit and only increases the risk of cross contamination.