Offering a drink to a guest is a very welcome gesture. Its always good to drink herbal teas, blended fruits, almond milk rather than coffee or tea.
Sri Sathya Sai Baba says ” Water is the emanator of the rasa principle, the taste factor. There must be a balanced equilibirium in the stomach of man of the various tastes – sweet, bitter, salt, sour, hot, acrid, etc. If the balance is upset, by the predominance of any one taste, health suffers a downfall! If the emanations from any one of the five elemental components in your body are more than tolerable, health will be damaged and saadhana (spiritual practice) will be affected adversely! Treat the elements as if they are the vesture of the Almighty. He is the current that activates everything everywhere.” (Sathya Sai Speaks – Vol 8 – Page 43)