Whey Protein Isolate (WPI)
90.0gprotein / 100g370 cal · 1.0g fat · $$$ · Quality 1.0
Duck Breast (skinless)
27.0gprotein / 100g201 cal · 11.2g fat · $$$ · Quality 0.91
This isn't close. Whey Protein Isolate (WPI) packs 90.0g of protein per 100g against Duck Breast (skinless)'s 27.0g — a 63.0g gap driven mostly by how concentrated or diluted each food naturally is.
On protein quality specifically, Whey Protein Isolate (WPI) scores higher — highest DIAAS of any common protein source — compared to Duck Breast (skinless), which is lit_estimate, complete animal protein.
Cost is roughly comparable between the two ($$$), so budget isn't the deciding factor here.
For anyone avoiding dairy specifically, Duck Breast (skinless) is the clear pick over Whey Protein Isolate (WPI).
Whey Protein Isolate (WPI)'s typical serving also delivers more leucine (2700mg vs Duck Breast (skinless)'s 2050mg) — relevant if the goal is maximizing the muscle-protein-synthesis trigger per meal, not just total grams.
If raw protein density is what you're optimizing for, Whey Protein Isolate (WPI) wins clearly. Choose Duck Breast (skinless) instead if its lower fat, cost, or prep time matters more to you than the extra grams.
Full nutrition comparison
| Per 100g | Whey Protein Isolate (WPI) | Duck Breast (skinless) |
|---|---|---|
| Protein | 90.0g | 27.0g |
| Calories | 370 | 201 |
| Fat | 1.0g | 11.2g |
| Carbs | 1.5g | 0.0g |
| Fiber | 0.0g | 0.0g |
| Quality score | 1.0 | 0.91 |
| Relative cost | $$$ | $$$ |
| Prep time | 1 min | 15 min |
Frequently asked
Which has more protein, whey protein isolate (wpi) or duck breast (skinless)?
Whey Protein Isolate (WPI) has 90.0g of protein per 100g compared to Duck Breast (skinless)'s 27.0g.
Which is lower in calories?
Duck Breast (skinless) is lower in calories per 100g, at 201 vs the other's 370.