Cook stove assembly

A removable multi-burner cooktop for a portable biomass stove comprising:

• a cooktop surface;
• a chamber positioned below the cooktop surface for containing and channeling exhaust from a solid fuel stove and functionally connecting a first second and third outlet with an inlet;
• the cooktop further defining;
• the first outlet designed to direct exhaust from the inlet toward the bottom of a first cooking vessel;
• the second outlet designed to direct exhaust from the inlet toward the bottom of a second cook vessel;
• the third outlet designed to direct exhaust out of the cooktop;
• the chamber further defining the inlet designed to fit into an exhaust outlet of a portable biomass fuel stove.

A portable biomass fuel stove comprising:

• a main body including an inner chamber forming a combustion chamber at least partially lined in FeCrAl, said combustion chamber further comprising;
• a lower combustion chamber for combustion of the solid biomass fuel, said lower combustion chamber having at least one inlet for air to pass through;
• and
• an upper combustion chamber for channeling the exhaust out of the combustion chamber.

A portable biomass fuel stove comprising:

• a shell;
• comprising a plurality of handles for lifting and transporting the stove, a bottom for supporting the stove on the ground, the shell further defining a inlet and an outlet;
• a cooktop positioned at the outlet configured to accept and support a cooking vessel above said outlet;
• and
• a combustion chamber for containing and combusting solid biomass fuel, wherein the combustion chamber is metal.