enitsuj, I prepare asparagus the same way as broccoli lo, juz use the head part. I'm using the avent steamer cum blender, steam the asparagus & pumpkin together for abt 10mins then throw in the Threadfin & steam for another 10mins. somehow the combi taste quite nice, sweet & saltish, think muz be the Threadfin ba.
googlez, i keep frozen purée for 1 wk, althou most websites say can keep for 1-3mths. I'm using the pigeon food warmer to reheat my puree. hb quite against using microwave for bb, but I saw quite a few websites using the microwave mtd, quite common in western countries, shld be ok ba. juz remember to stir the purée & let it cool down b4 serving to avoid hot spots.