Pizza Crust is a hard-hitting drum voice and goes way beyond drum territory. It consists of two layers - the NOISE source and dual oscillator TONE generator. Hard-hitting drums need a lot of transient attention and CRUST has you covered with the combination of pitch envelope, layer mixing, FM envelope, and transient shaper with hard-clipping.

The NOISE source has built in lowpass-highpass FILTER and 4 modes (white noise, clap, bit and metallic).
The TONE has 4 oscillator configurations (FM, FM2, dual and ring modulation), pitch envelope, detune, V/Oct input and timbral SHAPE control.
The LAYER fader crossfades between the layers, but also adjusts their relative decay envelopes to achieve drum-kit like playability.
The ENV knob makes shortest envelopes in the middle and elongates the decay to the right and both attack and decay to the left making more of a shaker/reversed/synth timbres.
The TIMBRE section either focuses on the whole body of the sound (left) or is focused towards the transient (right).
The final CLIP distortion stage with either soft clipping with a bass boost (left) or transient shaper with hard clipping (right) makes the drums go super-hard.

While keeping the module compact the CRUST is oriented towards performance. The assignable CTRL knob and CV can give you another performance control of your choice so you only perform with the parameters that are important and don't accidentally change your set and forget settings. Few more performance oriented button combos allow you to store and (re)load presets or reset certain parts of the sound engine.