Master Crumb

Why You Need a Kitchen Scale for Sourdough

If you take one thing from this guide, let it be this: buy a kitchen scale. It's the single most important tool for consistent baking, and it makes sourdough dramatically easier.

Why Weighing Matters

Baking is chemistry. Small variations in ingredients create big differences in results. Consider flour:

  • 1 cup of flour can weigh anywhere from 120g to 180g
  • This depends on how you scoop, how settled the flour is, humidity, and more
  • That 60g difference is 50% variation

With weight, 500g of flour is always 500g of flour. No variation. No guessing.

The Problem with Cups

Flour Variations

Depending on how you measure, 1 cup of flour can be:

  • Scooped: ~140-160g
  • Spooned and leveled: ~120-130g
  • Packed: ~150-180g

Which method did the recipe author use? You often can't tell.

No Way to Measure Hydration

Sourdough recipes use baker's percentages (hydration). You can't calculate percentages with cups.

Scaling is Complicated

Want to make half a recipe? With weights, just halve the numbers. With cups, you're doing fraction math.

Benefits of Weighing

Consistency

Same weights = same results. If a loaf turns out perfect, you can replicate it exactly.

Troubleshooting

When something goes wrong, you can identify the variable. "Maybe I used too much flour" becomes quantifiable.

Following Recipes

Professional and artisan recipes use weights. Without a scale, you're guessing at conversions.

Easier Process

Tare your bowl, add flour until the scale reads 500g, tare again, add water until 350g. Done. No measuring cups to wash.

What to Look for in a Scale

Must Have

  • Gram precision: Reads to 1g minimum
  • Tare function: Reset to zero with container on scale
  • Capacity: At least 5kg (11 lbs) to weigh bowls with dough

Nice to Have

  • 0.1g precision: Useful for measuring salt and starter accurately
  • Large platform: Fits bigger bowls
  • Quick response: Updates weight immediately
  • Rechargeable/USB: No batteries to replace

Recommended Scales

Budget: Basic Digital Scale ($10-15)

Any digital kitchen scale with 1g precision and 5kg capacity. Brands like Amazon Basics, Ozeri, or Escali work fine.

Mid-Range: Escali Primo ($25)

Popular choice among home bakers. Accurate, durable, responsive.

Professional: Oxo Good Grips ($50+)

Pull-out display, larger platform, precise and quick.

How to Use a Scale for Baking

Method: Tare and Add

  1. Place mixing bowl on scale
  2. Press tare (zeros the scale)
  3. Add flour until it reads 500g
  4. Press tare again
  5. Add water until it reads 350g
  6. Continue for each ingredient

One bowl, no measuring cups, no mess.

For Small Amounts

For salt (10g) and starter (100g), precision matters more. If your scale only reads to 1g, that's usually fine. For more precision, a jeweler's scale (0.01g) can be helpful for salt.

Converting Old Recipes

If you have a recipe in cups, you can convert it:

General Conversions

  • 1 cup bread flour ≈ 120-130g
  • 1 cup whole wheat flour ≈ 120g
  • 1 cup water = 236g (weight = volume for water)
  • 1 tablespoon salt ≈ 18g (varies by type)

But it's better to find a recipe written in weights from the start.

The Baker's Percentage System

With weights, you can use baker's percentages:

  • All ingredients expressed as % of flour weight
  • Flour is always 100%
  • Water at 350g with 500g flour = 70% hydration

This makes scaling recipes and understanding formulas much easier.

Bottom Line

A $15 kitchen scale will improve your baking more than any other single purchase. If you're serious about sourdough—or baking in general—it's essential, not optional.