You want to bake or to become a retailer?
I used to know one bakery in kiambu that supplies cakes -(fav is marble cakes) to almost all the city shops.They also do occasional cakes on order and their prices friendly.
Now what shocked me was their location, because their small nbo office was tucked in river road huko kule real hustlers roast cassavas and ndumas as early as 8 am. I used to imagine they pay less than 5k per month in rent because of the location and size.
Every day a mini-van from Kiambu would deliver the cakes to the small dingy location and customers like me would collect from there-used to supplement me when I was unable to bake.
By 11 am count yourself lucky if you found a single cake remaining.
They lock office and return to Kiambu to bake for the next day.
Name? try walking along river road/moi avenue/ any street including koinange and buy a marble cake,check the label inside and if it reads kiambu ni hao.Post the name here and I will confirm if they are the ones.
City based bakeries will not give you much in terms of profit because their costs of production are high.