Choosing suppliers: price, quality and reliability

To choose a supplier, compare the real cost of what you can actually use, not the list price. That includes how much of what they sell you is usable, how often they let you down and what each failure costs you. Then score what cannot be measured in money (consistent quality, reliability, payment terms) and pick the one that comes out best overall. For every important ingredient, keep a second, tested supplier as well, because the day your main one fails you will not have time to look.

The list price is misleading

Two suppliers offer you chicken thighs: one at $6.40 a kilo, the other at $6.90. The first looks better. But price per kilo is only part of the cost. Two things are missing:

• Yield. If one supplier's thighs carry more fat, more water or more trim, you pay for kilos you throw away. What matters is the cost per usable kilo: price ÷ yield. The guide on yield percentage: as purchased vs edible portion shows how to measure it.
• Failures. If a supplier sometimes runs out, you end up buying in a hurry, at a higher price and with an extra trip. That extra cost, spread over all your orders, is part of their real price.

What an unreliable supplier costs

When a supplier lets you down, you pay in one of these ways:

• You buy from the supermarket or another supplier at a higher price.
• You make an extra trip, with its fuel and hours.
• You change the menu or stop selling that product for a day.
• You use an ingredient of a different quality and the product comes out different.

The last one is the most expensive in the long run, because customers notice when your product changes. If it matters to you that your meal prep boxes taste the same every week, read making the same product every time: part of that consistency depends on the ingredient being consistent too.

Worked example: chicken for meal prep boxes

You use chicken thighs in your meal prep boxes. You need 30 kg of usable, trimmed chicken a week. You have two options and three weeks of trial orders with each.

Supplier A, a cash and carry. $6.40 a kilo. Measured yield: 75%, so you buy 30 ÷ 0.75 = 40 kg a week. Your records show they were out of thighs 3 of the last 20 weeks (15% of the time). Those weeks you bought from a supermarket at $9.50 a kilo, with an extra trip that cost you $15 in fuel and time. To keep it simple, assume the supermarket chicken yields the same.

Supplier B, a local butcher who delivers. $6.90 a kilo. Measured yield: 82%. Has not missed a delivery in 20 weeks.

Expected weekly cost with A:

• 85 weeks in 100: 40 × 6.40 = $256.00, so 0.85 × 256.00 = $217.60 on average
• 15 weeks in 100: 40 × 9.50 = $380.00, so 0.15 × 380.00 = $57.00 on average
• Extra trip: 0.15 × 15 = $2.25 on average
• Total: 217.60 + 57.00 + 2.25 = $276.85 a week
• Effective price: 276.85 ÷ 40 = $6.92 a kilo
• Cost per usable kilo: 276.85 ÷ 30 = $9.23

Weekly cost with B:

• Kilos to buy: 30 ÷ 0.82 = 36.59 kg
• Cost: 36.59 × 6.90 = $252.47 a week
• Cost per usable kilo: 6.90 ÷ 0.82 = $8.41

The supplier with the higher list price is cheaper in practice: $276.85 − $252.47 = $24.38 less a week, about $98 a month. And that is before counting the weeks when, without chicken, you had to change the menu.

With different numbers the result can flip. A wholesaler with a better yield who almost never runs out beats any butcher. What changes is that now you know it from your own data.

Score what money does not measure

Some things do not fit neatly into the calculation and still matter. A simple table keeps you from choosing on friendliness alone or price alone. Score each supplier 1 to 5 on each criterion, multiply by the weight and add up.

Supplier A: 0.35 × 3 + 0.25 × 3 + 0.25 × 2 + 0.15 × 4 = 1.05 + 0.75 + 0.50 + 0.60 = 2.90. Supplier B: 0.35 × 4 + 0.25 × 4 + 0.25 × 5 + 0.15 × 3 = 1.40 + 1.00 + 1.25 + 0.45 = 4.10.

The weights are yours. If cash is tight, payment terms may matter more than quality. If you sell to a café that expects the same product every week, consistent quality matters more. The useful part is setting the weights before you score, not after.

Always have a backup

For every critical ingredient, the one you cannot produce without, keep two suppliers:

• The main one, which comes out best in the calculation and the table.
• The backup, properly tested. Buy from them now and then, so they know you, so you know how their product yields and so they will serve you on the day you need them.

In the example, supplier A makes a good backup: you already know their yield, and you are there anyway for dry goods. Buying from them now and then also keeps the relationship going, which helps when you want to negotiate with your suppliers.

Where to look for that backup depends on the ingredient. The guide on market, wholesaler or supermarket covers what is worth buying where, and how to buy ingredients for a small food business covers the whole buying routine.

Write it down so you can compare

None of this works without data. Record the price in your purchase log, the yield when you measure it, and every failure: "out of stock", "arrived late", "too much fat". After two or three months of notes, comparing suppliers stops being a feeling.

Do it with the calculator

In the food cost calculator, enter your recipe with each supplier's effective price, adjusted for yield, and compare the loaded cost per unit you get with each one.