From Ireland to Austria Series: What the Hell is "Brown Sauce"?

This is from a series originally posted on my original blog: Seefahrer Thayer. While I don't recommend it, you can view the original posts here. Because the content had value and useful tips I've decided to repost them here, however, they've since been heavily edited and updated.

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I haven't been brave enough to try it.

Update: I've tried it... it's like barbeque sauce... but not.