You dont have to do a cereal mash on instant/minute rice, it can be added to straight in with a single infusion
let grain rest at 120 before working with rice, rice should be milled to resemble malt-o-meal. Bring 5 gal. to boil, add rice, stir until thick, turn off heat, lower temp of rice with cold water to 150 and add 2# milled two-row, let set 20 minuets, turn heat back on and bring rice to boil, stiring constantly, do not let rice scorch, this is very important and also very labor intensive, once rice has boiled for 5 minuets turn heat off and add rice to main mash, use gloves, once rice has been stired in to main mash temp should be very close to 148, mash one hour,
Hmm I should have reviewed that before posting, It's different from what I read in the book, sorry. Here's exactly how I do a cereal mash with rice, it's different still, but easier and works the same without having two mashes going:
1. I boil the rice in my mash water for about 10 minutes, stirring to avoid scorching
2. bring the temp down to 120 and add 6-row, allow for a protein rest, raise temp to 150 to allow the highly-enzymatic 6-row to start working on the rice for about 30 minutes.
3. add the rest on the malt (2-row and whatever specialty grains) and mash as usual
It makes for a long brew-day
you may want to use some rice hulls to avoid a stuck lauter/sparge.
Or you could avoid this altogether by using flaked or intstant rice. That's what I've done for last two cream ales (which where VERY close to Bud). Just do a single infusion, you can add the processed rice right in... so easy compared to a cereal mash, and it tastes the same in the end.
Again, sorry for causing confusion