BBQ Food Quantity Calculator

BBQ Food Planning Guide

How Much Meat Per Person?

General rule: 200-250g raw meat per adult for a main meal BBQ (the meat reduces in weight when cooked — a 150g burger becomes approximately 120g cooked). Breakdown per adult: 1-2 beef burgers (150g each), 2-3 sausages (50-70g each), plus optional chicken thighs or ribs. For a 4-hour afternoon BBQ, most adults eat 1 burger + 2 sausages minimum, with heavier eaters adding a chicken thigh. Children: approximately half the adult quantity (1 burger OR 2 sausages, not both), plus children tend to fill up on sides and buns rather than meat alone.

What do I need to know about Timing the Cook?

The biggest BBQ mistake: cooking everything at once before guests arrive, then serving cold food. BBQ is best served fresh off the grill. Stagger the cooking: sausages take 15-20 minutes, burgers 10-12 minutes, chicken thighs 25-30 minutes, chicken breasts 20-25 minutes. The hot zone / cold zone principle: bank coals to one side (or turn off half the burners on a gas BBQ). Sear on the hot side first, then move to indirect heat to cook through without burning. Critical food safety: chicken must reach 75°C at the thickest point before serving, regardless of how it looks on the outside.

What's the key thing to understand about Sides and Salads?

Sides per person: coleslaw 80g per person (a 500g tub serves 6). Potato salad 150g per person. Mixed salad 60-70g. Corn on the cob: 1 per person. Buns: 1-2 per person (always buy slightly more buns than burgers — guests want extras for sausages). Chips/potato wedges: 150g per person as one of the sides. Shopping guide for 12 adults: 1 × 500g coleslaw tub, 2 × 500g potato salad, 2 large salads, 12 corn cobs (optional), 2 × 6-packs of brioche buns, 1.5kg oven chips/wedges.

What do I need to know about Food Safety at BBQs?

Key food safety rules: keep raw meat chilled until cooking — never leave unrefrigerated for more than 1-2 hours. Separate raw and cooked meat on different plates and with different utensils. Never put cooked food back on the plate that held raw meat. Pork and chicken must be cooked through — no pink meat. Beef burgers (minced meat) must be cooked all the way through to 75°C — unlike steak, which can be rare because bacteria are only on the outside. Cross-contamination risk: use different chopping boards and utensils for raw and cooked meat, and never put cooked food back on a plate that held raw meat without washing it first.

What should I know about Meat Shrinkage During Cooking?

Raw meat loses roughly 20-30% of its weight during grilling or barbecuing, mostly as rendered fat and moisture, which means quantity calculations based on the FINAL cooked serving size need to account for this shrinkage when buying raw meat — a target of 200g cooked meat per person typically means buying around 250-280g raw per person, not 200g raw, since the raw weight will shrink down to roughly that cooked target. This shrinkage rate varies by cut and fat content: fattier cuts like pork belly or well-marbled ribeye lose proportionally more weight (closer to 30%) as fat renders out, while leaner cuts like chicken breast lose somewhat less (closer to 15-20%), which is why a single flat 'raw to cooked' ratio applied uniformly across very different meat types will systematically over- or under-estimate depending on which specific cuts are being served.

What do I need to know about Mixed Grill Quantity Planning?

When serving multiple meat types at a barbecue (burgers, sausages, chicken, steak), the standard planning approach is to total the overall per-person meat target (typically 300-400g raw per person across everything) and then split that across the chosen items by course role rather than serving a full portion of every single item to every guest — most guests will take a reasonable serving across 2-3 different items rather than a full individual portion of each type offered. A practical rule many caterers use: budget 1.5 sausages, 1 burger, and roughly 100-150g of a third item (chicken piece or steak) per adult guest at a typical mixed BBQ, scaling down proportionally for events with more food variety or where sides and salads are expected to make up a larger share of the plate, since more variety on offer generally means slightly smaller individual portions taken of any single item.

What do I need to know about Catering for Vegetarian Guests at a BBQ?

Planning adequate vegetarian options at a BBQ needs more thought than simply adding a veggie burger per vegetarian guest, since vegetarian and vegan BBQ foods vary widely in how filling and substantial they are compared with meat portions. A good rule of thumb is to plan at least two distinct vegetarian items per vegetarian guest (for example, a plant-based burger or sausage plus a hearty side like halloumi skewers, grilled vegetables, or a bean-based salad), since relying on a single item risks guests being left hungry if that one item runs out or isn't to their taste. Cross-contamination is a real consideration, not just an afterthought: vegetarian items should be grilled on a separate area of the BBQ, using separate utensils and ideally a separate section of grill grate, or cooked first before any meat touches the grill, since juices and fat from meat can transfer easily to foods cooked on the same surface afterwards. Pre-marinated halloumi, portobello mushrooms, corn on the cob, and vegetable skewers all grill well and feel substantial rather than like an afterthought side dish. When totalling overall food quantities for a mixed group, treat vegetarian mains with the same per-person planning rigour as meat mains, rather than treating them as a smaller, secondary category.

Worked Example: Planning Meat for a 20-Guest BBQ

For 20 adult guests at a mixed BBQ where meat is the main protein (not supplemented heavily with vegetarian mains), a standard planning figure is roughly 200-250g of raw meat per person across all meat types combined, scaled down slightly when several side dishes are served. That gives a target of 20 x 225g = 4.5kg of raw meat total. Split across a typical mixed grill — say burgers, sausages and chicken thighs — a workable split is 1.5kg burgers (about 10-12 patties allowing some guests two), 1.3kg sausages (roughly 20-24 standard sausages), and 1.7kg chicken thighs or drumsticks (roughly 16-20 pieces), which covers the target total while giving guests a choice across three proteins. Remember that meat shrinks roughly 25% by weight during grilling, so the raw weight bought needs to be the raw figure, not the expected cooked serving size.

Food Safety Checklist for Outdoor Grilling

The UK Food Standards Agency's core BBQ safety advice centres on avoiding cross-contamination and ensuring thorough cooking: keep raw meat separate from cooked meat and salads (separate plates, tongs and chopping boards), never place cooked food back on a plate that held raw meat, and check poultry and burgers are cooked through with no pink meat and juices running clear, since both are higher-risk for harmful bacteria if undercooked. Whole cuts such as steak can safely be served pink in the middle, but minced or reformed products (burgers, sausages, kebabs made from minced meat) must be cooked all the way through, as mincing can distribute surface bacteria throughout the product.

Quantity Reference by Guest Count

Scaling a BBQ shopping list up or down is easier with a quick reference rather than recalculating ratios each time, especially once you move beyond a small gathering into territory where bulk buying changes the maths.

These figures assume a typical mixed grill of burgers, sausages and chicken with modest side dishes; a meat-heavy spread with minimal sides should be scaled up by roughly 15-20%, while a gathering with substantial salads, grains and vegetarian mains can scale meat down by a similar margin without anyone going hungry.