When God says it’s okay. Which reminds me of a joke Dan told me once (here paraphrased):
God said “Thou shalt not seethe a kid in its mother’s milk.”
A rabbi responded “Does this mean we shouldn’t cook any kind of meat in the same pot as any kind of milk?”
God said “Thou shalt not seethe a kid in its mother’s milk.”
The rabbi continued, “Well, does it mean after eating dairy that we should consume meat only after waiting for 2 hours? Or that after eating meat, we should consume dairy only after waiting for 6 hours?”
God reiterated “Thou shalt not seethe a kid in its mother’s milk.”
Finally, the rabbi asked “Does it mean we should keep completely different sets of dishes and utensils for dairy and meat products?”
God replied, “Fine. Have it your way.”