The Office Baon Cost Ledger: Rice, Oil, Cooking Gas and Packaging per Homemade Meal

To compare homemade baon with a bought lunch, calculate the cost of ingredients actually used, the number of portions eaten and any measured cooking or packing costs. Record the cash needed for the shopping trip separately. Department of Agriculture price monitoring can provide a dated comparison, but use your own receipt for the meal calculation. Source 1

Set up the batch ledger

Take one ordinary work lunch—for example chicken-and-vegetable ulam with rice—and prepare a spreadsheet or notebook with eight rows: rice, chicken, vegetables, aromatics, oil, seasoning, fuel and packaging. For every bought ingredient record quantity purchased, cash paid, quantity actually used, and quantity left. Use a four-portion cook as an example because dividing a batch by four makes costs clear, but do not imply that the purchased kilo yields four equal boneless portions without measurement.

Record inputs and edible output

1. Choose the exact meal and record the total cash spent at the palengke. Keep the vendor's unit and date; an egg priced per piece cannot be entered as price per kilo without a conversion.
2. Weigh rice dry before cooking and record grams consumed by the batch. Note the remaining dry stock separately from the cash outlay for the bag.
3. Measure raw meat and usable cooked meat. Record bones and trim separately; a chicken priced by whole-bird weight is not equivalent to the same mass of boneless thigh.
4. Measure oil and bottled seasoning actually used, even if it is only a small fraction of each purchased container. Count vegetable trimmings and unavoidable waste honestly.
5. For fuel, estimate from actual gas consumption over comparable cooks or an electricity meter if available. If no measurement exists, label the fuel cost 'not measured' instead of inventing precision.
6. Divide the sum of consumed cost and measurable operating cost by the number of genuine edible lunch portions. Compare that result with what each person would actually buy outside, including travel or delivery charges only when relevant.

Separate cash flow from unit cost

The distinction between cash flow and unit cost is critical. Buying a two-kilo rice bag today may require more cash than the four lunches consume, but the balance is pantry inventory, not wasted lunch cost. Similarly, a reusable food box should not be charged at its entire price every day. Its effective cost per use depends on its purchase price, life and replacement seals; using the same box for a year gives a different result from losing it after two lunches.

Cost-ledger errors to catch

• Homemade lunch looks almost free. Why it happens or what it means: Only chicken and rice were costed. Useful response: Add measured oil, seasoning, vegetables and packaging.
• One shopping trip appears very expensive. Why it happens or what it means: Full pantry purchases were charged to one batch. Useful response: Separate cash paid from grams and millilitres actually consumed.
• Cost per portion is unrealistically low. Why it happens or what it means: Raw kilos were divided as though fully edible. Useful response: Use actual cooked edible output and genuine serving count.

A worked four-lunch example

Worked example using hypothetical amounts: ₱320 of ingredients makes four lunches, so ingredient cost is ₱320 ÷ 4 = ₱80 each. Assume ₱20 for batch fuel and the total becomes ₱340, or ₱85 for each of four lunches. If one lunch is discarded and only three are eaten, the same ₱340 becomes ₱113.33 per eaten lunch. In your own ledger, add packaging and other actual costs before dividing; note unpaid cooking time separately.

What belongs in each column

Fractions are illustrative; use the actual pack sizes and amounts consumed.

• A 2 kg rice bag, of which 400 g is used. Cash needed now: Full purchase price. Cost attributed to this batch: 20% of the purchase price.
• Seasoning bottle, one-tenth used. Cash needed now: Full bottle price if buying it now. Cost attributed to this batch: 10% of bottle price.
• Reusable baunan. Cash needed now: Full price if bought now. Cost attributed to this batch: An explicit cost-per-use estimate.
• Four lunches, one discarded. Cash needed now: No shopping refund. Cost attributed to this batch: Divide total cost by three meals eaten when assessing waste.