Heat oven to 350°F. Grease and flour a Bundt pan. I recommend using Baker's Joy spray..
Stir together sugar, flour, cocoa, baking powder, baking soda and salt in large bowl. Add eggs, yogurt, oil and vanilla; beat on medium speed of mixer 2 minutes. Stir in boiling water (batter will be thin). Pour batter into prepared pan.
Bake 40 to 45 minutes or until wooden pick inserted in center comes out clean. Cool 10 minutes; remove from pans to wire racks. Cool completely. Dust with confectioner's sugar.
Notes
You will not taste the coffee, it just gives the chocolate more flavor.
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