a TOK 'Y' uppercase in the style of UnifrakturCook is a blackletter font. It is based on Peter Wiegel’s font Koch fette deutsche Schrift which is in turn based on a 1910 typeface by Rudolf Koch. While the glyph design of Peter Wiegel’s font has hardly been changed at all, UnifrakturCook uses smart font technologies for displaying the font’s ligatures (OpenType, Apple Advanced Typography and SIL Graphite).