Plant · nut
Walnuts
Walnuts provides 15 g of protein per 100 g (15 g per typical serving).
15gprotein / 100 g
- Per serving
- 15 g (1/4 cup · 100 g)
- Calories
- 654 kcal / 100 g
- Protein density
- 2.3 g / 100 kcal
PDCAAS
0.44
Scale 0–1 (capped at 1.0)
DIAAS
42%
Low quality
Leucine
1.2 g
1.2 g per serving
Digestion
Slow
Best: Between meals / pre-sleep
Limiting amino acid
Lysine
Pair it to complete the profile
Nutrition per 100 g
- Protein 15 g 9% kcal
- Fat 65 g 83% kcal
- Carbs 14 g 8% kcal
| Calories | 654 kcal |
|---|---|
| Leucine | 1,200 mg (8% of protein) |
| Lysine | 400 mg |
| Typical serving | 1/4 cup (100 g) |
Leucine threshold
About 2.5–3 g of leucine per meal maximally switches on muscle protein synthesis.
2.5 g
One serving (1/4 cup) = 1.2 g leucine
About 2.1 servings reach the threshold, or combine with a leucine-rich food.
Pair it with
- Beans, lentils or chickpeasLegumes are lysine-rich, the classic rice + beans match.
- Tofu, tempeh or edamameSoy brings lysine and a high PDCAAS (0.91).
- Hummus (chickpea) with this foodHummus + pita is a complete-protein pairing.
Cost & footprint
- Cost per gram of protein
- $0.055
- Cost for 30 g protein
- ≈ $1.65
- Carbon footprint
- 2.8 kg CO₂e / kg
LowHigh
US retail estimates; prices and emissions vary by region and producer.