For a taste of DC, I like to bring out of town guests for crabcakes at Eastern Market, salty oat cookies and chai tea at Teasim, oysters at Union Market, or Ethiopian. Ethiopian food is often the hardest sell to people who have never tried it. The clincher is the spongy bread used in place of utensils. You either love injera or you hate it. I happen to love it. But even more, I love the spicy red lentils that are often the primary attraction on the vegetarian plate.