Casa Italia downtown has Philadelphia Cream cheese, which is great on the bagels you can buy in Hann Maristes either at Dakar Academy or from Marie-Hélèné.
Also, the American House in Almadies/Ngor has American condiments and stock from IKEA.
Thanks for the tips, F.!
Dakar Eats 
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Where’s the American House?
I also wonder where is the American House??? Did you find out Antoinette?
It’s on the route de Ngor, not far from Katia restaurant.