Take up a blade of grass and construct a treasure king's land; enter into a particle of dust and turn the great dharma wheel. Do not arouse disdainful mind when you prepare a broth of wild grasses; do not arouse joyful mind when you prepare a fine cream soup.
Where there is no discrimination, how can there be distaste? Thus, do not be careless even when you work with poor materials, and sustain your efforts even when you have excellent materials.
Never change your attitude according to the materials. If you do, it is like varying your truth when speaking with different people; then you are not a practitioner of the way.
– Zen Master Dogen, "Instructions for the Tenzo"
Tricycle Daily Dharma October 25, 2011
http://www.tricycle.com/-food/instructions-tenzo