Although I have never eaten the Maximillan Sunflower tuber, I do grow and eat the root tuber from a related plant, another native sunflower, Jerusalem Artichoke or Helianthus tuberosus.

Sunchoke, also called Jerusalem artichoke (Helianthus tuberosus) is a perennial plant and a native North American root vegetable that is now cultivated on five continents. It is part of the ...