Compounds including vanillin and ethylvanillin and methods of making and using the same

A crystalline form of 2:1 vanillin/ethylvanillin, characterized by:

• a melting point of 60° C.±2° C.;
• and
• an X-ray diffraction spectrum with several characteristic lines at angles 2θ (in°)=20.7-25.6-27.5-28.0 (measured relative to the line of copper K-Alpha1=1.54060 Å);
• said lines not being present in the X-ray diffraction spectrum of pure vanillin and of pure ethylvanillin.