The first experiment 1, concentration, and the water complementing tastes too sweet.
The satisfaction 2: 20 people.
The second, from filling water, add half a cup of water, complementing the balance and taste delicious, mellow.
The satisfaction 15: 20 people.
And time trials 3 after adding more water from the other half a cup. The water complementing liquid and fresh taste too.
The satisfaction 3: 20 people.