GUINNESS SPHERE & INFUSED BEEF GEOMETRY.

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Culinary Concept / Recipe

Note: This recipe is for an advanced fine-dining concept and requires specific molecular gastronomy skills and equipment.

Yield: 4 plates

Prep time: 3 hours (plus 24 hours marination/cooking)

Cook time: 1.5 hours

I. The Beef Geometry (Sous-Vide Beef Cube)

Ingredients:

600g Dry-Aged Irish Beef Tenderloin, center-cut• 5g Salt

Culinary Concept / Recipe

Note: This recipe is for an advanced fine-dining concept and requires specific molecular gastronomy skills and equipment.

Yield: 4 plates

Prep time: 3 hours (plus 24 hours marination/cooking)

Cook time: 1.5 hours

I. The Beef Geometry (Sous-Vide Beef Cube)

• Ingredients:

• 600g Dry-Aged Irish Beef Tenderloin, center-cut

• 5g Salt

• 2g Black Pepper

• 1 sprig Fresh Thyme

• 2 sprigs Fresh Rosemary

• 2 cloves Garlic, crushed

• 30g Butter, for searing

• Method:

1. Trim the beef tenderloin into a large, uniform rectangular block.

2. Season the beef generously with salt and black pepper on all sides.

3. Place the beef in a vacuum-seal bag with the thyme, rosemary, garlic, and a small knob of butter. Seal.

4. Set up a sous-vide bath at 54.5°C (130°F) for medium-rare.

5. Submerge the sealed beef in the water bath and cook for 3 to 4 hours.

6. After cooking, remove the beef from the bag and pat it thoroughly dry.

7. Heat a heavy cast-iron skillet over high heat until it smokes. Add butter and a little oil.

8. Sear the beef block quickly on all sides to create a deep, even crust, allowing about 30 seconds per side.

9. Let the beef rest for at least 15 minutes before carving.

10. Trim the edges precisely into sharp, 4cm x 4cm cubes. Slice one edge of the cube slightly to expose the pink center for the "Geometry" look.

II. The Guinness Sphere (Reverse Spherification)

• Part 1: The Alginate Bath

• Ingredients: 1 Liter Water (low calcium content), 5g Sodium Alginate.

• Method: Blend the sodium alginate and water thoroughly with an immersion blender until smooth. Let the bath rest for at least 1-2 hours (or overnight) to allow all air bubbles to escape.

• Part 2: The Guinness Core

• Ingredients:

• 300ml Guinness Stout

• 20ml Stout reduction (Guinness simmered until reduced by 80%)

• 10g Blackstrap Molasses (for color/complexity)

• 1g Calcium Lactate Gluconate

• Method: Gently whisk all ingredients together. Pour into small spherical silicone molds and freeze completely.

• Part 3: Spherification Process

• Method:

1. Once the Guinness spheres are frozen solid, carefully drop them into the Sodium Alginate bath one at a time. Do not overload.

2. Allow the spheres to "cook" in the bath for 3-5 minutes, which forms the membrane as the outer layer thaws and reacts with the alginate.

3. Carefully remove the spheres from the alginate bath and rinse them in two successive bowls of fresh, clean water.

4. Keep warm (about 40-50°C) in a neutral olive oil or light stout syrup bath until service.

III. The Purée and Sauces

Ingredients (Purée):

• 500g Yukon Gold Potatoes, peeled and diced

• 100ml Heavy Cream

• 50g Unsalted Butter

• 1 tsp Smoked Paprika

• Salt and white pepper to taste

• Ingredients (Beef Reduction):

• 1 Litre Rich Beef Stock (homemade)

• 100ml Guinness Stout

• 2 Shallots, minced

• 1 sprig Thyme

• Salt, to taste

• Ingredients (Herb Emulsion):

• 50g Parsley, blanched

• 50g Dill, blanched

• 10g Spinach, blanched

• 100ml Grapeseed oil

• Salt

• Method (Purée):

1. Boil potatoes until tender. Drain and pass through a fine sieve or food mill.

2. Combine cream, butter, and smoked paprika. Whisk into the potatoes until smooth. Season with salt and white pepper. Pass through a fine sieve again if necessary. Transfer to a piping bag.

• Method (Beef Reduction):

1. Combine shallots, thyme, and Guinness in a saucepan. Reduce by half.

2. Add beef stock and simmer gently until the liquid is reduced to a glossy sauce (viscous texture). Strain through a fine-mesh chinois.

• Method (Herb Emulsion):

1. Quickly blanch herbs for 15 seconds, then shock in ice water. Squeeze dry.

2. Blend herbs with grapeseed oil until vibrant and smooth. Strain through a muslin cloth (or coffee filter) to obtain a clear, vibrant green oil. Use a small amount of ultra-tex to emulsify into a light gel.• 2g Black Pepper

• 1 sprig Fresh Thyme

• 2 sprigs Fresh Rosemary

• 2 cloves Garlic, crushed

• 30g Butter, for searing

• Method:

1. Trim the beef tenderloin into a large, uniform rectangular block.

2. Season the beef generously with salt and black pepper on all sides.

3. Place the beef in a vacuum-seal bag with the thyme, rosemary, garlic, and a small knob of butter. Seal.

4. Set up a sous-vide bath at 54.5°C (130°F) for medium-rare.

5. Submerge the sealed beef in the water bath and cook for 3 to 4 hours.

6. After cooking, remove the beef from the bag and pat it thoroughly dry.

7. Heat a heavy cast-iron skillet over high heat until it smokes. Add butter and a little oil.

8. Sear the beef block quickly on all sides to create a deep, even crust, allowing about 30 seconds per side.

9. Let the beef rest for at least 15 minutes before carving.

10. Trim the edges precisely into sharp, 4cm x 4cm cubes. Slice one edge of the cube slightly to expose the pink center for the "Geometry" look.

II. The Guinness Sphere (Reverse Spherification)

• Part 1: The Alginate Bath

• Ingredients: 1 Liter Water (low calcium content), 5g Sodium Alginate.

• Method: Blend the sodium alginate and water thoroughly with an immersion blender until smooth. Let the bath rest for at least 1-2 hours (or overnight) to allow all air bubbles to escape.

• Part 2: The Guinness Core

• Ingredients:

• 300ml Guinness Stout

• 20ml Stout reduction (Guinness simmered until reduced by 80%)

• 10g Blackstrap Molasses (for color/complexity)

• 1g Calcium Lactate Gluconate

• Method: Gently whisk all ingredients together. Pour into small spherical silicone molds and freeze completely.

• Part 3: Spherification Process

• Method:

1. Once the Guinness spheres are frozen solid, carefully drop them into the Sodium Alginate bath one at a time. Do not overload.

2. Allow the spheres to "cook" in the bath for 3-5 minutes, which forms the membrane as the outer layer thaws and reacts with the alginate.

3. Carefully remove the spheres from the alginate bath and rinse them in two successive bowls of fresh, clean water.

4. Keep warm (about 40-50°C) in a neutral olive oil or light stout syrup bath until service.

III. The Purée and Sauces

• Ingredients (Purée):

• 500g Yukon Gold Potatoes, peeled and diced

• 100ml Heavy Cream

• 50g Unsalted Butter

• 1 tsp Smoked Paprika

• Salt and white pepper to taste

• Ingredients (Beef Reduction):

• 1 Litre Rich Beef Stock (homemade)

• 100ml Guinness Stout

• 2 Shallots, minced

• 1 sprig Thyme

• Salt, to taste

• Ingredients (Herb Emulsion):

• 50g Parsley, blanched

• 50g Dill, blanched

• 10g Spinach, blanched

• 100ml Grapeseed oil

• Salt

• Method (Purée):

1. Boil potatoes until tender. Drain and pass through a fine sieve or food mill.

2. Combine cream, butter, and smoked paprika. Whisk into the potatoes until smooth. Season with salt and white pepper. Pass through a fine sieve again if necessary. Transfer to a piping bag.

• Method (Beef Reduction):

1. Combine shallots, thyme, and Guinness in a saucepan. Reduce by half.

2. Add beef stock and simmer gently until the liquid is reduced to a glossy sauce (viscous texture). Strain through a fine-mesh chinois.

• Method (Herb Emulsion):

1. Quickly blanch herbs for 15 seconds, then shock in ice water. Squeeze dry.

2. Blend herbs with grapeseed oil until vibrant and smooth. Strain through a muslin cloth (or coffee filter) to obtain a clear, vibrant green oil. Use a small amount of ultra-tex to emulsify into a light gel.