diff --git a/app/api/session.py b/app/api/session.py
index 0178e38..c4c253e 100644
--- a/app/api/session.py
+++ b/app/api/session.py
@@ -189,6 +189,16 @@ def delete_remembered_series():
     return {"items": []}
 
 
+@router.delete("/remembered-series/{series_id}")
+def delete_remembered_series_item(series_id: str):
+    service = SessionService()
+    try:
+        items = service.remove_remembered_series(series_id)
+    except ValueError as exc:
+        raise HTTPException(status_code=400, detail=str(exc))
+    return {"items": items}
+
+
 @router.get("/mapping-preview")
 def get_mapping_preview(session_id: str = Query("default", min_length=1)):
     service = SessionService()
diff --git a/app/services/session_service.py b/app/services/session_service.py
index 07126cb..5b6d450 100644
--- a/app/services/session_service.py
+++ b/app/services/session_service.py
@@ -286,6 +286,17 @@ class SessionService:
         with self._connect() as conn:
             conn.execute("DELETE FROM remembered_series")
 
+    def remove_remembered_series(self, series_id: str) -> list[dict]:
+        normalized = str(series_id or "").strip()
+        if not normalized:
+            raise ValueError("series_id is required")
+        with self._connect() as conn:
+            conn.execute(
+                "DELETE FROM remembered_series WHERE series_id = ?",
+                (normalized,),
+            )
+        return self.list_remembered_series()
+
     def _enforce_remembered_series_limit(self, limit: int) -> None:
         with self._connect() as conn:
             conn.execute(
diff --git a/app/static/app.js b/app/static/app.js
index 34d3000..9265b34 100644
--- a/app/static/app.js
+++ b/app/static/app.js
@@ -323,6 +323,17 @@
     renderRememberedDropdown();
   }
 
+  async function removeRememberedSeriesItem(seriesId) {
+    const normalizedId = String(seriesId || "").trim();
+    if (!normalizedId) return;
+    const data = await api(`/api/session/remembered-series/${encodeURIComponent(normalizedId)}`, {
+      method: "DELETE",
+    });
+    state.rememberedSeries = data.items || [];
+    renderRememberedDropdown();
+    openRememberedDropdown();
+  }
+
   function rememberedForQuery(query) {
     const normalized = (query || "").trim().toLowerCase();
     const rememberedItems = (state.rememberedSeries || []).map((entry) => entry.series || {});
@@ -352,16 +363,40 @@
 
   function renderRememberedDropdown() {
     const query = (el.searchInput.value || "").trim();
-    const items = rememberedForQuery(query);
+    const items = rememberedForQuery(query).slice().sort((a, b) => {
+      const aLabel = (a.display_name || a.name || "").toLowerCase();
+      const bLabel = (b.display_name || b.name || "").toLowerCase();
+      return aLabel.localeCompare(bLabel);
+    });
     el.rememberedDropdownList.innerHTML = "";
 
     items.forEach((item) => {
       const li = document.createElement("li");
       const left = document.createElement("span");
+      left.className = "remembered-item-title";
       const label = item.display_name || item.name || "(series)";
       left.textContent = label;
+      left.title = label;
       li.appendChild(left);
-      li.addEventListener("click", () => withHandler(() => selectSeries(item), li));
+
+      const removeBtn = document.createElement("button");
+      removeBtn.type = "button";
+      removeBtn.className = "remembered-remove-btn";
+      removeBtn.textContent = "×";
+      removeBtn.setAttribute("aria-label", `Remove ${label}`);
+      removeBtn.title = `Remove ${label}`;
+      removeBtn.addEventListener("click", (event) => {
+        event.preventDefault();
+        event.stopPropagation();
+        withHandler(() => removeRememberedSeriesItem(item.id), removeBtn);
+      });
+      li.appendChild(removeBtn);
+
+      left.addEventListener("click", (event) => {
+        event.preventDefault();
+        event.stopPropagation();
+        withHandler(() => selectSeries(item), left);
+      });
       el.rememberedDropdownList.appendChild(li);
     });
   }
diff --git a/app/static/styles.css b/app/static/styles.css
index 63f6f22..4afc7c9 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -141,6 +141,37 @@ body {
   max-height: 220px;
 }
 
+#rememberedDropdownList li {
+  align-items: center;
+}
+
+#rememberedDropdownList .remembered-item-title {
+  flex: 1;
+  min-width: 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  cursor: pointer;
+}
+
+#rememberedDropdownList .remembered-remove-btn {
+  border: none;
+  background: transparent;
+  color: #64748b;
+  width: 22px;
+  height: 22px;
+  line-height: 1;
+  border-radius: 4px;
+  padding: 0;
+  font-size: 15px;
+  cursor: pointer;
+}
+
+#rememberedDropdownList .remembered-remove-btn:hover {
+  background: #eef2f7;
+  color: #0f172a;
+}
+
 .stack {
   display: flex;
   flex-direction: column;
diff --git a/data/session_state.sqlite3 b/data/session_state.sqlite3
index b635bc1..63e3fae 100644
Binary files a/data/session_state.sqlite3 and b/data/session_state.sqlite3 differ