Comparison
American porter vs Oatmeal stout
What is the difference between American porter and Oatmeal stout?
The short answer
The main difference is hop aroma: American porter has noticeably more of it than Oatmeal stout. American porter also leads on caramel & toffee; Oatmeal stout on dryness and body.
Generated from the two style records. No editor has written this comparison up, so it carries no verdict beyond what the data supports.
Where they overlap
They share comparable bitterness, roast, sweetness, overlapping strength ranges, the same style family — the boundary between them is narrower than the comparison suggests.
Side by side
| American porter | Oatmeal stout | |
|---|---|---|
| Family | Porter & stout | Porter & stout |
| Fermentation | Top-fermented (ale) | Top-fermented (ale) |
| Origin | United States | United Kingdom |
| Category status | Established | Established |
| Strength | 4.8–6.5% ABV | 4.2–5.9% ABV |
| Bitterness (IBU) — IBU measures iso-alpha acids in the lab. It does not track perceived bitterness, which residual sweetness, body and roast all alter — compare the sensory rows below for how each actually tastes. | 25–50 IBU | 25–40 IBU |
| Colour — These are the same depth in the glass; colour is not what tells them apart. | Very dark brown to black — 22–40 SRM, 43–79 EBC | Dark brown to black — 22–40 SRM, 43–79 EBC |
| Original gravity | 1.050–1.070 | 1.045–1.065 |
| Final gravity | 1.012–1.018 | 1.010–1.018 |
| Serving temperature | 9–12°C | 9–12°C |
| Carbonation | 2–3 vol CO₂ | 1.8–2.4 vol CO₂ |
| Glassware | Nonic pint, Tulip glass | Nonic pint |
| Clarity | clear | opaque |
How they taste different
| Character | American porter | Oatmeal stout |
|---|---|---|
| Hop aroma | Low | Not characteristic |
| Dryness | Not characteristic | Low |
| Caramel & toffee | Low | Not characteristic |
| Body | Moderate | High |
| Citrus | Trace–Low | Not characteristic |
| Nutty | Not characteristic | Low |
| Carbonation | Moderate | Low |
Which should you choose?
- You want more hop aroma → American porter
- You want more dryness → Oatmeal stout
Derived from where the two actually differ. Neither is better — this is a question of which difference you want.