Avanindraji, Indian food in general is accepted as sattvik, except where you use too much oil, spice or fry or overcook or recook. So see that your breakfast does not fall into any of these descriptions. Also, such food specifications must never be flouted only when you are doing very intense pranayama/asana sadhana. Otherwise, for most people doing a `normal' 30-one-to-one-hour sadhana, regular food is advised. The Bihar School of yoga even says that with regular yoga your body automatically begins to reject (after you develop disinterest in such foods)certain foods as not suitable for your yoga practice! You also begin to eat less, as you become more fuel-efficient. So continue with eating whatever is sattvik. Since you say you read Aha Zindagi, which covers such matters with great detail, you must now have an idea about what constitutes sattvik surely? About the timings, two to four hour gap is essential between a heavy meal and yoga practice (whether it is breakfast or lunch is immaterial), the gap is essential to ensure the blood flow reaches the limbs while digestion and nutrient absorption are not interfered with. And yes, one-hour gap between tea and pranayama is ok -- some pitta dosha people feel discomfort (esp when doing kapalabhati and breath retention) when the tea is had too close to practice, due to reflux -- but otherwise you don't have to get so nervous about this... when your practice is regular and steady these things will begin to matter disturb even
