diff --git a/spec/marten-turbo/turbo_stream_spec.cr b/spec/marten-turbo/turbo_stream_spec.cr
index ee83e8b..270084d 100644
--- a/spec/marten-turbo/turbo_stream_spec.cr
+++ b/spec/marten-turbo/turbo_stream_spec.cr
@@ -6,6 +6,16 @@ describe MartenTurbo::TurboStream do
       stream = MartenTurbo::TurboStream.new
       stream.to_s.should eq ""
     end
+
+    it "accepts a block to initialize the stream" do
+      stream = MartenTurbo::TurboStream.new do |stream|
+        stream.append("messages", "<div>Message 1</div>")
+      end
+
+      stream.to_s.should contain "<turbo-stream action=\"append\" target=\"messages\">"
+      stream.to_s.should contain "<div>Message 1</div>"
+      stream.to_s.should contain "</turbo-stream>"
+    end
   end
 
   describe "#append" do
diff --git a/src/marten_turbo/turbo_stream.cr b/src/marten_turbo/turbo_stream.cr
index 55f5c28..a27a7b4 100644
--- a/src/marten_turbo/turbo_stream.cr
+++ b/src/marten_turbo/turbo_stream.cr
@@ -8,6 +8,11 @@ module MartenTurbo
       @streams = [] of String
     end
 
+    def initialize
+      @streams = [] of String
+      yield self
+    end
+
     # Creates a new TurboStream instance and adds a single action.
     #
     # ```