G'day Tony
I've used them a couple of times. I just give them the same treatment as home toasted malt. Stick them in the oven on some foil or baking paper at around 180 degrees until they look visually brownish and smell nice. Nothing more scientific than that.
Best bet is to set some untoasted oats aside as a comparison. I just put them beside the toasted ones as a visual indicator.
You can pick them up in the flavour as a nutty overtone. I'd say they'd probably also aid in head retention.
Here's a recipe I used recently.
Hope this helps.
Warren -
HUH Bitter (Hacked Up Hackney)
A ProMash Recipe Report
BJCP Style and Style Guidelines
-------------------------------
08-A English Pale Ale, Standard/Ordinary Bitter
Min OG: 1.032 Max OG: 1.040
Min IBU: 25 Max IBU: 35
Min Clr: 9 Max Clr: 36 Color in EBC
Recipe Specifics
----------------
Batch Size (L): 50.00 Wort Size (L): 50.00
Total Grain (kg): 7.39
Anticipated OG: 1.038 Plato: 9.40
Anticipated EBC: 22.1
Anticipated IBU: 29.2
Brewhouse Efficiency: 82 %
Wort Boil Time: 90 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential EBC
-----------------------------------------------------------------------------
1.4 0.10 kg. Baird's Pale Chocolate UK 1.033 500
40.6 3.00 kg. Barrett Burston Ale Malt Australia 1.038 4
47.4 3.50 kg. Baird's Maris Otter Pale Ale UK 1.037 7
2.6 0.19 kg. Flaked Oats America 1.033 5
2.7 0.20 kg. Baird's Dark Crystal UK 1.034 260
1.4 0.10 kg. Baird's Crystal UK 1.034 145
2.7 0.20 kg. Weyermann Caramunich III Germany 1.037 187
1.4 0.10 kg. Weyermann Melanoidin Germany 1.037 93
Potential represented as SG per pound per gallon.
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
30.00 g. Wye Target Pellet 9.00 17.8 60 min.
10.00 g. First Gold Pellet 7.70 1.0 10 min.
20.00 g. First Gold Pellet 7.70 2.7 15 min.
30.00 g. First Gold Pellet 7.70 7.7 30 min.
30.00 g. First Gold Pellet 7.70 0.0 0 min.
30.00 g. Northdown Plug 5.80 0.0 Dry Hop
30.00 g. Northdown Plug 5.80 0.0 0 min.
7.09 g. Saaz Plug 2.20 0.0 0 min.
Extras
Amount Name Type Time
--------------------------------------------------------------------------
0.50 Oz Irish Moss Fining 15 Min.(boil)
Yeast
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WYeast 1469 West Yorkshire