I think most restaurants want you to believe they brew it. In reality, they buy tea flavor concentrate in a liquid form. I believe 6 ounces of the stuff makes a few gallons of "brewed ice tea". Tastes just like it too.

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Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport