The two-storey café is situated on Brick Lane, near Shoreditch, and employs eight staff.
The interior is designed to reflect a retro style with exposed brickwork, formica furniture and 1980s and '90s music.
Among the decor are novelty cereal boxes, vintage milk bottles and other cereal related memorabilia.
The cafe offers more than 100 different varieties of global cereal brands, 12 kinds of milk and 20 toppings.
It also sells coffee, toast and poptarts.

The owners were challenged by Channel 4 over the price of their bowls of cereal in Tower Hamlets, a London borough with relatively high rates of poverty.
The interview went viral, with reactions on social media portraying the Keery brothers as "out of touch hipsters".
Traditional media commentary defended the small business, supporting their entrepreneurship and pointing at gentrification around Shoreditch.
In response, the brothers wrote an open letter to the broadcaster on Twitter.
Boris Johnson also wrote in his Telegraph column in defence of their enterprise.
The two-storey café is situated on Brick Lane, near Shoreditch, and employs eight staff. The interior is designed to reflect a retro style with exposed brickwork, formica furniture and 1980s and '90s music. Among the decor are novelty cereal boxes, vintage milk bottles and other cereal related memorabilia. The cafe offers more than 100 different varieties of global cereal brands, 12 kinds of milk and 20 toppings. It also sells coffee, toast and poptarts.
The owners were challenged by Channel 4 over the price of their bowls of cereal in Tower Hamlets, a London borough with relatively high rates of poverty. The interview went viral, with reactions on social media portraying the Keery brothers as "out of touch hipsters". Traditional media commentary defended the small business, supporting their entrepreneurship and pointing at gentrification around Shoreditch. In response, the brothers wrote an open letter to the broadcaster on Twitter. Boris Johnson also wrote in his Telegraph column in defence of their enterprise.
Cereal Killer Cafe