In the words of JHS Pedals:

The Milkman is a collaborative idea between Josh Scott of JHS Pedals
and Tim Marcus of Milkman Sound. The concept is simple; a single pedal
that offers up an echo/slap delay and a boost that can be used as an
always-on enhancer or as an overdrive for small wattage amplifiers. Josh
designed the circuit in late 2016 and here we are, a small footprint,
easy to use boost/echo 2-in-1 that fits into any style players rig with
ease.