Comparison
Irish red ale vs Session IPA
What is the difference between Irish red ale and Session IPA?
The short answer
The main difference is hop aroma: Session IPA has far more of it than Irish red ale. Irish red ale also leads on caramel & toffee; Session IPA on citrus and tropical fruit.
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 body, overlapping strength ranges — the boundary between them is narrower than the comparison suggests.
Side by side
| Irish red ale | Session IPA | |
|---|---|---|
| Family | Pale ale | IPA |
| Fermentation | Top-fermented (ale) | Top-fermented (ale) |
| Origin | Ireland | United States |
| Category status — One of these is a more settled category than the other, which is worth knowing before treating the comparison as exact. | Established | Emerging |
| Strength | 3.8–5% ABV | 3.5–5% 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. | 18–28 IBU | 30–55 IBU |
| Colour | Amber to deep reddish copper — 9–18 SRM, 18–35 EBC | Straw to gold — 4–8 SRM, 8–16 EBC |
| Original gravity | 1.036–1.046 | 1.036–1.048 |
| Final gravity | 1.010–1.014 | 1.006–1.012 |
| Serving temperature | 9–12°C | 6–9°C |
| Carbonation | 1.8–2.4 vol CO₂ | 2–3 vol CO₂ |
| Glassware | Nonic pint | Nonic pint |
| Clarity | clear | variable |
How they taste different
| Character | Irish red ale | Session IPA |
|---|---|---|
| Hop aroma | Trace | High |
| Citrus | Not characteristic | Moderate–High |
| Caramel & toffee | Moderate | Not characteristic |
| Tropical fruit | Not characteristic | Low–Moderate |
| Yeast fruitiness (esters) | Trace–Low | Not characteristic |
| Bitterness | Low | Moderate–High |
| Bread & biscuit | Low | Not characteristic |
| Resin & pine | Not characteristic | Low |
| Roast | Trace | Not characteristic |
| Sweetness | Low–Moderate | Trace |
Which should you choose?
- You want more hop aroma → Session IPA
- You want more caramel & toffee → Irish red ale
Derived from where the two actually differ. Neither is better — this is a question of which difference you want.