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-   -   Which Diffuser Medium do you use in your UDS? (

bbqgeekess 12-01-2013 12:11 AM

Which Diffuser Medium do you use in your UDS?
I am just curious what you all use for a diffuser (if any) in your UDS, why you chose it and how it is working out for you.


I am contemplating a 16" perforated pizza pan, for my 18.5" 30 gallon UDS. I can use it as is when I want fat/drippings to fall through to hit the coals for some of that fat vapor flavor, and I can also optionally foil it when I don't want that flavor, and/or to collect grease to make less of a mess. (I used a terra cotta planter base in my Mini WSM but I don't know how much that would help out with my 30 gallon UDS.)

Regardless, for my setup (30 gallon) I do need to use a diffuser because my cooking grate (7" down from top) would be to close to the coals for direct cooking (from what I hear).

71-South 12-01-2013 12:27 AM

I use a perforated pizza pan as well, but when I did the biscuit test, the ones on the outside were obviously darker. So, I switched to three remote thermometers (didn't want to ruin more biscuits) and started drilling the holes in the pizza pan bigger until I got a consistent temp throughout. I've been very pleased w/ the performance (no real hot spots) since then.

ajstrider 12-01-2013 05:34 AM

Though I don't use a diffuser, the pizza pan with holes cut in it is a pretty populat method.

ebijack 12-01-2013 05:36 AM

You'll have to try a couple sizes out. Also it depends on the dia of your coal basket. In my bullet which is the same dia as your 30 gal drum. I found if I went to anything over 14 inch in dia. I used 2 times the coal to get the temp up for birds. Also a lot more for the 225 temps. Just a thought.

TurkeyLeg 12-01-2013 06:05 AM

Perforated pizza pan here also. I didn't like the flavor I was getting with the fat dripping directly on the coals. Seemed bitter to me, but others on here like the fat dripping.

16Adams 12-01-2013 06:12 AM

Large foil wrapped heavy duty pizza stone from bed bath beyond

SmokerKing 12-01-2013 07:02 AM

---k--- 12-01-2013 07:24 AM

I've recently started using one of thesecast iron pizza pans instead of a terra cotta pan:

I got it for under $30. I preheat it on the stove before putting in.

Bludawg 12-01-2013 09:04 AM


Fwismoker 12-01-2013 09:26 AM

Use the mini's steamer holes as a template for a pizza pan....Perfect

Use the steamer in the mini....Toss the pot

4uweque 12-01-2013 10:32 AM

Perforated pizza pan here with no complaints.

J-Rod 12-01-2013 10:37 AM

Pizza pan, but i usually dont run it. only for super fatty stuff like bacon wrapped whatevers..

By a Cheapo and drill to get desired temp characteristics.

Smokin' D 12-01-2013 11:31 AM

One or two 1/4" thick steel plates with cutouts in them.

Outboard Racer 12-01-2013 04:25 PM


Originally Posted by SmokerKing (Post 2714157)

Smokerking makes a great diffuser plate. I have 2 of them and glad I have them.

Great craftsmanship

Budman1 12-01-2013 06:05 PM

Perforated pizza pan for me.

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