Cooking for Large Groups: Practical Guide for 12–30 People

Choose Recipes That Work at Scale

Not every recipe scales gracefully to large groups. The dishes that work best for large-group cooking share certain characteristics:

• · Braises and slow-cooked dishes: beef short ribs, lamb shoulder, braised chicken. These can be cooked a day ahead, improve with rest, and reheat without deteriorating. Ideal for large groups.
• · Roasted dishes: multiple trays of roasted vegetables, chicken pieces, or fish can be cooked simultaneously if you have enough oven space.
• · Cold or room-temperature dishes: salads, terrines, caponata, grain salads. These can be plated well ahead with no last-minute cooking pressure.
• · Avoid: dishes requiring individual portion cooking to order (sautéed fish fillets, fried eggs, anything requiring constant attention). These are impossible to execute well for 20 people in a home kitchen.

Oven Capacity is Your Primary Constraint

A standard home oven holds two or three trays. Cooking for 20 people means everything needs to be achievable within that constraint — or staggered across multiple cooking windows before guests arrive.

• · Identify which dishes need the oven simultaneously and which can be cooked at different temperatures. Dishes that need 200°C and dishes that need 150°C cannot share the oven efficiently.
• · Slow cookers and portable induction hobs expand your cooking capacity. Two 6.5-litre slow cookers can handle a complete braise for 20 guests overnight with zero oven space required.
• · If you need the oven to peak on the night, plan your cooking so the most oven-intensive dishes are done by the day before, leaving the oven free for final heating.

Scaling Ingredients at Large Quantities

Most ingredients scale linearly — double the guests, double the quantities. But a few things don't scale proportionally:

• · Salt and strong spices: scale conservatively at first — you can add more, but you cannot remove it. Start at 75% of the scaled quantity and adjust after tasting.
• · Leavening agents (baking powder, yeast): do not scale linearly for large baking quantities. For very large batches, work in separate batches using the original recipe quantities rather than one enormous batch.
• · Cooking times: a larger volume of braised meat takes longer than the scaled recipe suggests. A casserole dish holding twice the original quantity may need 25–30% more cooking time.

Morsello's recipe scaling tool handles ingredient quantity scaling automatically, though you should always verify seasoning and cooking times manually for very large batches.

Shopping for Large Groups

For 20+ guests, some ingredients need to be sourced differently. Your local supermarket may not stock 4 kg of beef short ribs or 6 kg of salmon. Planning ahead:

• · Contact a butcher or fishmonger a week in advance for large quantities of specialist proteins.
• · For dry goods and pantry items, a cash and carry or wholesale supplier is often better value and stock at large quantities.
• · Generate your scaled shopping list first so you know the total weight of each item before you shop.

Buffet vs Plated Service

Above 16 guests, a buffet-style service is often more practical than plating individual portions. The decision:

• · Plated service (up to ~14 guests): more formal, more work. Requires pre-plating or rapid kitchen service. Possible with two people helping.
• · Buffet or family-style (14+ guests): large serving dishes on the table, guests serve themselves. Less logistical pressure, more convivial atmosphere. A braise in a beautiful pot in the centre of the table is as impressive as a plated version.