Sieve the yolk completely; unsieved pieces leave yellow lumps in the fragile dough.
Sieved cooked yolk and a rye-rich rubbed dough make compact, sandy diamonds for the Christmas tin.
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Cooked-Yolk Rye Shortbread Diamonds Recipe
Follow the tray sizes, portions and baking intervals in the instructions below.
Total time includes hands-on preparation, required chilling or resting, whole-batch cooking, cooling and finishing.
Kitchen tools you’ll need
- saucepan
- fine sieve
- bowl
- pastry blender
- rolling pin
- knife
- two 13 x 18-inch half sheets
- parchment
- rack
Ingredients
US measures are approximate. Gram weights help keep portions consistent; spice weights vary with density.
Instructions
Mix the dough
- Mix the dough: Cover one egg with cold water, bring to a boil, cover off heat 12 minutes, then cool in cold water 10 minutes. Reserve the white for another use. Push the 17 g yolk through a fine sieve. Rub diced butter into both flours and salt until sandy; mix in sugar and yolk, then press into a cohesive dough without kneading.
Shape and chill
- Shape and chill: Roll between parchment to 1/4 inch thick. Cut the entire dough into 24 similar diamonds, about 2 inches tip to tip, gently pressing scraps together once. Dock with a fork. Chill 30 minutes.
Bake the whole batch
- Bake the whole batch: Heat oven to 325°F (165°C) conventional or 300°F (150°C) fan. Use two parchment-lined 13 x 18-inch half sheets, 12 cookies per sheet, spaced at least 1 inch apart. Bake one tray at a time on the middle rack for 18–22 minutes, turning front to back halfway; keep the waiting tray refrigerated. Edges and bases should be pale gold and the centers dry. Whole-batch oven time is 44 minutes for both trays.
Cool the cookies
- Cool the cookies: Rest 10 minutes on each tray, then cool 20 minutes on a rack before packing; the 30-minute cooling allowance includes the tray rest.
Timing and scaling
- Timing and scaling: 30 min hands-on + 52 min required chill/rest + 44 min whole-batch oven baking + 30 min cooling/setting = 156 min. Cooling includes tray/pan rests and runs from the final tray; earlier-tray cooling may overlap later baking. Ingredient warm-up and frozen-dough thawing are extra; preheat during shaping/chilling. Scale ingredients and US equivalents, not oven temperature, piece sizes or per-tray bake time; extra trays extend the whole-batch time. Required waiting includes the 12-minute egg stand, 10-minute cold-water cooling and 30-minute dough chill.
Chef’s Science & Pro Tips
Ingredient science
Cooked yolk supplies fat without the binding behavior of raw egg; rye further limits a chewy gluten network.
Technique & texture
Sieve the yolk completely; unsieved pieces leave yellow lumps in the fragile dough.
Finishing & serving
The unfilled diamonds suit tea and can be packed after their full 30-minute cooling period.
Storage and make-ahead
| Method | How long | What to do |
|---|---|---|
| Room temperature | 5 days | Up to 5 days. Seal fully cooled cookies airtight in a cool dry room. Separate layers with parchment; keep away from moist treats. |
| Refrigeration | up to 7 days | Unnecessary; up to 7 days if needed. Baked refrigeration is unnecessary for this formula; use only if the room is warm. Seal airtight to prevent condensation and odors. |
| Raw freezing | 1 month | Up to 1 month. Freeze the unfilled dough tightly wrapped. Thaw overnight in the refrigerator, then shape and complete the stated chill. Thawing time is additional. |
| Baked freezing | 2 months | Up to 2 months. Freeze completely cooled cookies airtight with parchment between layers. Thaw sealed at room temperature for 1–2 hours. |
| Restoring | As described | Optional 3–5 minutes. Refresh plain cookies at 300°F (150°C) conventional or 275°F (135°C) fan for 3–5 minutes, then cool 20 minutes before sealing. This extra time is outside fresh-batch timings. |
Notes
- Scale ingredients, including US measures, without changing cookie size or oven temperature. Extra trays increase whole-batch time.
Nutrition
Approximate values per portion from the listed ingredient weights divided into 24 equal portions. Includes required fillings and finishes. Brands, unused coatings and actual portion size affect the estimate.
Frequently Asked Questions
What does the cooked yolk do?
Cooked yolk supplies fat without the binding behavior of raw egg; rye further limits a chewy gluten network.
Why sieve the yolk?
Sieve the yolk completely; unsieved pieces leave yellow lumps in the fragile dough.
When can I pack the diamonds?
The unfilled diamonds suit tea and can be packed after their full 30-minute cooling period.
