It's 够真才出涩。You wrote the word " 狗” wrongly.
It’s a song for lemon tea advertisement.“够真” means materials using make the lemon tea is 100% of lemon and tea, not food additive. “才出涩” means that because the drink is made of lemon and tea, it tastes stringent.
In addition, "涩” and "色” have the same pronunciation, so "出涩” is equivalent to "出色” in pronunciation, which means remarkable.
so the sentence "够真才出涩” also is equivalent to "够真才出色”， the latter means the genuine materials make the tea remarkable.
Hope that help you.