The 2018 Castello di Fonterutoli Siepi IGT is a distinguished proprietary blend of Merlot and Sangiovese from Tuscany, Italy. This red wine is noted for its remarkable balance and complexity, receiving high praise from several prominent wine critics.

James Suckling awarded it an impressive 97 points, describing it as "extremely perfumed and crystal-clear" with notes of violets, plums, and raspberries, accompanied by "very fine tannins that are extremely polished and refined." He suggests that while it's tempting to drink now, it will be even better after 2022.

Vinous' Antonio Galloni also gave the wine 97 points, calling it "absolutely gorgeous" and highlighting its rich, creamy texture with flavors of "inky blue/purplish fruit, lavender, dried herbs, spice, licorice, and new leather." Galloni emphasizes its "immediacy" and allure, noting it as one of the best editions in recent memory.

Robert Parker's Wine Advocate, through Monica Larner, scored it 95 points, appreciating its "extremely linear and focused" character with a "pretty mineral signature" that complements the red and purple fruit notes. Larner describes it as highly "gastronomic" and food-friendly, ideal for pairing with classic Tuscan dishes.

Decanter also scored it 95 points, noting the wine's "sweetness that is enveloping and seductive" with flavors of raspberry, plum, and black cherry. The review highlights the estate's sustainable agro-forestry practices, which contribute to its positive carbon balance.

Lastly, Wine Spectator awarded it 94 points, praising its "supple texture and integrated structure," and recommending it for both immediate enjoyment and aging potential.

In summary, the 2018 Castello di Fonterutoli Siepi IGT is a well-crafted wine with layers of complexity and elegance, making it a standout selection for connoisseurs and collectors alike.