may
Dun worry about the vomitting! Me too, everymeal sure throw up abit. But if you cut down on the meal size, ie 3 meals split to 6 meals, you will feel better.
Xue ge is very easy to prepare. Buy a packet, about $50, maybe can eat about 4-5 times.
1) soak them in water, when they expands, you just remove any impurities you can see
2) use red dates (remove the seed, the seed represent 3 fire, very heaty), rock sugar
3) add 1 - 2 bowl of water, and steam over small frame for couples of hours.