Preheat oven to 375ºF. Grease and flour a 12-cup Bundt pan.

In a bowl, whisk flour, baking soda, sugar and salt. In a pan, whisk oil, butter, 2 Tbsp. cocoa, 3 Tbsp. Turkish coffee, 2 Tbsp. cinnamon and 1 cup water. Bring to a simmer over medium-low heat, stirring. In a bowl, whisk eggs, non dairy sour cream and vanilla.

Stir cocoa mixture into flour mixture. Fold in egg mixture. Pour into Bundt pan, smoothing top. Bake until a skewer inserted in cake's center comes out clean, 25 to 33 minutes. Let cool on a wire rack for 10 minutes; remove from pan. Let cool completely.

Make glaze: Whisk 1/4 tsp. each cocoa, turkish coffee and cinnamon. In a microwave melt chocolate with margarine (start with 30 seconds and then stir and do 10 seconds stirring until done). Remove from microwave; let cool. In a bowl, whisk confectioners' sugar and non dairy milk. Stir in chocolate mixture. Drizzle glaze over cake. Sift cocoa mixture over top; let stand until glaze is set.