During a retreat I did a few years ago, the cook served rice six times a week. I can't digest rice very well but I would think, "Never mind, so many sentient beings worked hard to make this food. I see it as blissful wisdom nectar." Then, I would eat a little and make offerings to the birds with the leftovers. I got to know the birds, which coincidentally were the same color as the deity I was meditating on. I saw the birds as the deity and imagined these deities flying in from everywhere, landing on the railing of my porch. I put out the rice transformed into blissful wisdom nectar and then made offerings to them. That helped me to transform the complaining mind that said, "Oh no, not rice again!"

Thubten Chodron, Cultivating a Compassionate Heart