1. US & European Cost-Per-30g-Protein Leaderboard
Here is how common supermarket protein staples rank when evaluated by caloric efficiency (protein per 100 kcal) and average retail cost per 30 g of protein across US and European grocery chains:
| Supermarket Staple | Portion for 30g Protein (US / EU) | Calories for 30g Protein | Protein per 100 kcal | Avg. Cost per 30g ($ / € / £) |
|---|---|---|---|---|
| Liquid Egg Whites (Carton) | 1.1 cups (9.5 fl oz) / 275 ml | 135 kcal | 22.2 g (A+) | $1.45 / €1.35 / £1.20 |
| Canned Tuna in Water (Drained) | 4.2 oz / 120 g | 138 kcal | 21.7 g (A+) | $1.15 / €1.10 / £0.95 |
| Skinless Chicken Breast (Raw) | 4.6 oz / 130 g | 156 kcal | 19.2 g (A+) | $1.35 / €1.40 / £1.25 |
| Peeled Shrimp / King Prawns | 5.0 oz / 145 g | 145 kcal | 20.6 g (A+) | $2.40 / €2.30 / £2.10 |
| 0% Fat Greek Yogurt / Skyr / Quark | 1.2 cups (10 oz) / 285 g | 165 kcal | 18.1 g (A) | $1.65 / €1.45 / £1.30 |
| Whey Protein Isolate / Concentrate | 1.25 scoops (1.3 oz) / 38 g | 150 kcal | 20.0 g (A+) | $0.95 / €0.90 / £0.80 |
| 1% Low-Fat Cottage Cheese | 1.1 cups (8.8 oz) / 250 g | 180 kcal | 16.7 g (A) | $1.55 / €1.40 / £1.25 |
| Extra-Firm Tofu (Pressed) | 9.0 oz / 255 g | 240 kcal | 12.5 g (B+) | $1.50 / €1.35 / £1.20 |
| Red Lentils / Black Beans (Dry) | 4.2 oz / 120 g dry (340 g cooked) | 415 kcal (+65g carbs) | 7.2 g (B - Carb + Protein) | $0.55 / €0.50 / £0.45 |
Scan Barcodes in the Aisle & Auto-Build Your Weekly Shopping List
Use CalorieCalc's Free Barcode Scanner in US, UK, and EU supermarkets to verify macros before you buy—or use the Smart Grocery List & AI Meal Planner (Pro) to turn your deficit meal plan into an aisle-sorted checklist.
2. Aisle-by-Aisle Calorie Deficit Shopping Checklist
Copy this checklist before your Sunday shop. Every item below was selected for maximum stomach volume, high protein or fiber, and minimal hidden fats:
| Supermarket Section | Top US & EU Staples to Buy | What to Swap Out |
|---|---|---|
| Meat & Poultry | Skinless chicken breast, 96/4 extra-lean ground beef or 5% beef mince, 93/7 turkey mince, pork tenderloin, venison | Swap 80/20 ground beef (285 kcal per 4 oz) for 96/4 lean mince (140 kcal per 4 oz / 113 g) |
| Fish & Seafood | Canned tuna in spring water, cod fillets, haddock, wild salmon, frozen peeled shrimp/prawns | Swap tuna canned in sunflower/soybean oil (220 kcal/can) for tuna in water (110 kcal/can) |
| Dairy & Chilled | 0% Greek yogurt, Icelandic Skyr, German/Nordic Quark, 1% cottage cheese, liquid egg whites, light mozzarella | Swap full-fat Greek yogurt (10% fat, 220 kcal/200g) for 0% Greek yogurt or Skyr (115 kcal/200g) |
| Grains, Potatoes & Legumes | White/gold potatoes (highest satiety index), rolled oats, basmati rice, sourdough or wholegrain rye bread, canned black beans & chickpeas | Swap oil-roasted granola (480 kcal/100g) for plain rolled oats (370 kcal/100g dry, expands 3x in water) |
| Produce & Freezer | Baby spinach, broccoli florets, zucchini/courgettes, bell peppers, strawberries, blueberries, frozen stir-fry veg | Swap dried fruit (320 kcal/100g) for fresh or frozen berries (45–55 kcal/100g) |
| Condiments & Flavor | Dijon or yellow mustard, hot sauce (sriracha/cholula), salsa, soy sauce, balsamic vinegar, nutritional yeast, Greek yogurt ranch | Swap standard mayonnaise (100 kcal/tbsp) for light mayo (35 kcal/tbsp) or seasoned 0% Greek yogurt |
Frequently Asked Questions
Is canned tuna safe to eat every day on a budget?
Choose skipjack ("chunk light") tuna in water rather than albacore ("white") tuna, as skipjack contains roughly one-third the mercury of larger albacore tuna. Most food safety agencies (FDA and EFSA) recommend limiting canned tuna to 2–3 cans per week and rotating with chicken breast, eggs, sardines, cod, or Skyr/Greek yogurt.
Why are boiled or baked potatoes recommended on a calorie deficit grocery list?
On the Holt Satiety Index, plain boiled or air-fried potatoes scored higher for fullness per calorie than any other tested food—more than 3 times as filling as croissants or white bread. A 200 g (7 oz) potato contains only 154 calories, 0 g fat, and 4 g fiber.
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