Roasted dried radish. Can I just eat this instead of water when rehydrating?

Because it's winter and I have had a severe cough and cold for almost a month, I have been drinking warm tea frequently and in small amounts. When I didn't have radish, I brewed and drank green tea. Since we brew and drink these hearty teas, plain water tastes bland and I can't drink it. Also, since I prefer to drink it lukewarm, plain water tastes even worse. Is it okay to replace water with tea or brewed water regularly?