what's the meaning of "the proof is in the pudding"

what's the meaning of "the proof is in the pudding"
what's the meaning of "the proof is in the pudding"

what's the meaning of "the proof is in the pudding"
It means that the true value or quality of something can only be judged when it's put to use.The meaning is often summed up as "results are what count."
原意是 什么东西好不好吃要尝了才知道.
后来引申出来的意思是 看结果才能信,有证据才能相信

the proof of the pudding is in the eating这句话的另一种表述方式.
就是说,证据在布丁中...布丁什么味道,要吃了才知道!

此句话应是：The proof of the pudding is in the eating =要检验布丁，就得吃一吃 = 空谈不如实验