I like to put my on the stove on about 3 on my electric stove and let it simmer for about an hour. I use 4 family size tetley green tea bags to a cup of splenda and half cup of lemon juice for a gallon. This is how I like to make mine. My mom uses 4 family size bags of black tea to 1/2 gallon, she puts her's in the microwave for about 10 minutes. She really likes it strong and no sugar.