Raku

Raku bowls are of two types. The red Raku is made from a reddish earthenware clay and is glazed with a lead glaze.

Koetsu learned the technique of Raku pottery from the Raku potter Kichizaemon Jokei (1561-1635) and his son Nonko (aka Donyu; 1599-1656), who also had the name Kichibei.

2010, John Mathieson, Techniques Using Slips, Chapter 6: Slips and Raku, page 53, As a technique, raku seems to encourage experimentation.

Many programming paradigms have influenced Raku. It has started its life under the name “Perl 6” but has been renamed in 2019 to break the illusion that it is just another version of Perl.